Online:Oriandra

Oriandra
Home Settlement	Artaeum
Location	Eldbur Sanctuary, Eldbur Ruins, Ceporah Tower
Race	Imperial	Gender	Female
Health	39,959 15,000 (Oriandra's Mind Trap)
Reaction	Friendly
Other Information
Faction(s)	Psijic Order

Oriandra

Oriandra is an Imperial member of the Psijic Order on an expedition in Summerset to free adventurers from K'Tora's mind trap. She can be initially found at the Eldbur Sanctuary for new characters, as well as Eldbur Ruins.

She is also seen again at Ceporah Tower on Artaeum.

Related Quests

• The Mind Trap: Escape the mind trap created by a mysterious entity. (disabled since Update 30)
• Whispers from the Deep: Help a member of the Psijic Order rescue a band of adventurers from a trap set by a dark entity.
• A Pearl of Great Price: Help the Psijic Order crack the puzzle of the Abyssal Pearl you found.
• Buried Memories: Defend Artaeum from invasion!
• Lost in Translation: Locate the Heart of Transparent Law.
• A Necessary Alliance: Figure out a way to get into the Crystal Tower with the help of Clavicus Vile and Mephala.
• The Crystal Tower: Ascend the Crystal Tower and put an end to Nocturnal's machinations.
• A New Alliance: Attend a meeting with the Proxy Queen to ensure the Crystal Tower is protected.

Quest-Related Events

The Mind Trap

Oriandra in the Mind Trap

As her projection appears, she says:

Oriandra: "Can you hear me? My name is Oriandra. I'll help you get out of this place. You aren't frozen, you just think you are. You can move, you just need to remember how."

Approaching the projection, she says:

Oriandra: "Now remember your strength, your power. Take a weapon. Feel the weight in your hand."

After picking up and equipping the Forgotten Adventurer's Sword:

Oriandra: "Now go. Beyond the door. You need to see for yourself before I tell you more."

After finding Oriandra outside the ruins:

Oriandra: "You've been imprisoned in this mind trap by an entity called K'Tora. Its magic is powerful, but you're stronger than you know."

Oriandra: "It may appear beautiful, but it's an illusion. A trap designed to control you."

Oriandra: "K'Tora won't tolerate your resistance much longer."

K'Tora: "There is no escape. I will break you in time. Watch as I turn your own memories against you!"

Oriandra: "Defend yourself! In the mind trap, memories can kill you!"

When fighting the second Warrior:

Oriandra: "Another one! Defend yourself and strike back!"

When fighting the third Warrior:

Oriandra: "A magic-user! Interrupt the spell and retaliate!"

After defeating all the Warriors:

Oriandra: "Well done! With every memory that returns, your resistance grows stronger. Now follow me!"

Upon reaching the precipice:

Oriandra: "I can't go farther in this form. If K'Tora notices me, we'll both be lost."

Oriandra: "You need to reach the tower to escape the mind trap. I can't go with you, but I'll send messages to guide you."

K'Tora: "You can't escape my mind trap! I'll destroy you with your darkest fears!"

Oriandra: "Just believe in yourself and you can do this. You simply need to jump."

After entering The Tower:

Oriandra: "The pearl. It's the key to escaping this mind trap."

After examining the Abyssal Pearl:

K'Tora: "Not so fast, little worm! Let's see how you fare against this nightmare!"

After killing the Yaghra Nightmare:

Oriandra: "Well done! Now destroy the pearl and wake up."

Upon waking up:

Oriandra: "Easy now. You did well."

Speaking to Oriandra at the conclusion of the tutorial quest:

"It gladdens my heart to see you awake and free, my friend. You're the first to respond to my help and escape from that entity's grasp."

Thanks for helping me, but who are you exactly?

"I am Oriandra and I wear the cloak of the Psijic Order. I came to Summerset at the behest of our Ritemaster when I sensed a dark and powerful mind magic emanating from this area.
When I noticed your predicament, I knew I had to intercede."

What's the Psijic Order?

"The Psijic Order is an ancient society of mages, more akin to a monastic order than to the upstart Mages Guild, for example.
We once served as advisors to the rulers of Tamriel, before we departed the world to pursue other interests."

What does this mean, you departed the world?

"It means just that. We took our island of Artaeum and sent it someplace else to better promote meditative study and contemplation.
We maintain an interest in Tamriel, though, hence my appearance here during your time of need."

Tell me more about the mind trap.

"I haven't isolated the source of the mind magic, except that the malevolent entity calls itself K'Tora. It imprisoned you in the mind trap in order to control you, but to what purpose I'm not sure."

Who or what is K'Tora?

"I have no idea. Whoever or whatever K'Tora is, it wields powerful mind magic. Much more powerful than anything I've ever encountered before. The mind trap is an insidious spell that has ensorcelled a number of victims.
I'm still watching over them."

Other victims?

"You weren't the only newcomer to wander into this mind trap. Even a number of High Elves have succumbed to the dark entity's power. With my help, though, you were the first to break free.
That gives me hope that I can eventually save the others."

If all that was in my mind, how come I still have the items I found there?

"You noticed that, did you? Very observant! The mind trap created replicas of items you already possessed. You needed them, so they became real inside the illusion.
And of course you'd still have them in the waking world. They are real, after all."

If I can ever repay you for your help, let me know.

"Take a moment to rest, but once you've shaken off any residual effects of the spell I might require your assistance.
And take this. I assume it belongs to you. It was near your unconscious body when I found you."

You receive the Forgotten Adventurer's Strong Box, one Skill Point and the Soul Magic skill line. If you exit the conversation before getting your reward and talk to her again, she says:

"With my help, you were able to extract yourself from K'Tora's mind trap. I just hope that the techniques I used to assist you will work on the others."

Finishing the conversation with Oriandra will result in her making the following final remark:

Oriandra: "I must return to the Eldbur Ruins to the north and aid the others caught in K'Tora's mind trap. If you find yourself in the area, you might be able to assist me. Stay safe and remember you have a friend in the Psijic Order!"

Whispers from the Deep

When approaching Oriandra, either in her physical form inside Eldbur Ruins, or her projected form outside Eldbur Ruins:

Oriandra: "You there! Do something useful and come help me!"

Talking to Oriandra, either inside or outside the Eldbur Ruins:

If you've met Oriandra before she'll greet you with:

"You're a welcome sight, my friend! I could use some help to free these people."

"You're just in time, my friend. I could use your help to free these people from K'Tora's mind trap."

How can I help?

"K'Tora has imprisoned a group of adventurers in mind traps, just as the dark entity did to you. I've established mental links with each member of the group, but I can't maintain the links and also perform the tasks necessary to set them free."

I can perform the tasks, just tell me what I need to do.

"Let me attune you to my spell. There! Now we're connected through my mental link.
Find the three adventurers, Cainar, Grog, and Miriya. When you get close, the spell should send you into their individual mind traps. I can direct you from there."

I'll set Cainar, Grog, and Miriya free from their mind traps.

Otherwise she'll say:

"Don't just stand there, help me! I can't do this by myself. The mind trap is just too strong."

Mind trap? I don't understand.

"A dark entity called K'Tora set a trap for a group of adventurers. It locked them in their own minds. I've established a mental link with the group, but I can't maintain it and also perform the tasks necessary to set them free.
I need your help."

What do you need me to do?

"Let me attune you to my spell. There! Now we're connected through my mental link.
Find the three adventurers, Cainar, Grog, and Miriya. When you examine them, the spell should take you into their individual mind traps. I can direct you from there."

I'll set Cainar, Grog, and Miriya free from the mind trap.

The rest of the dialogue is the same, except if you've already met her, she won't introduce herself again.

"Cainar should be our first priority, though don't tell him I said that.
We approach magecraft differently, but he's an accomplished practitioner of the art. He can assist us in rescuing the others, so find him and free him first."

Where can I find Cainar?

"Deeper inside the ruins. Just watch out for the yaghra creatures. I've never seen them before, but they appear to come from the sea.
Also, if you encounter any of the mind-trapped High Elves, there's nothing we can do for them. They're too far gone."

Who are you and why are you trying to save these adventurers?

"Really? That's your question? Oh, very well.
I am Oriandra, a member of an ancient order of sages and magic users. I happened to be nearby when I felt K'Tora's mind magic. It didn't affect me, but I couldn't leave these poor souls to such a fate."

An ancient order of sages and magic users?

"I'm a member of the Psijic Order, but we don't have time for me to explain what that means right now. Just know that I'm trying to help these people and I can't rescue them without you.
So, can we get back to the problem at hand?"

What happens when I find Cainar and the others?

"Cainar and the others will appear to be in a deep sleep. When you get close enough, the spell I'm maintaining should transport you into their individual mind traps.
Be careful in there. Thoughts and memories become real inside a mindscape."

What will I encounter in the mindscape?

"Hard to say. Each one is formed from an individual's personal memories. Plus, you'll notice K'Tora's dark influence, which will only grow more prominent as the mind trap snaps shut.
I should be able to contact you through the link I've established."

What's the purpose of the mind trap?

"This kind of magic is insidious. It takes control of the target's mind, as it did with the High Elves. We need to free the adventurers before it takes them, too.
Now get to it. The link requires a lot of energy and I can't hold it forever."

What can you tell me about K'Tora? (Prior to completing Buried Memories)

"Not very much, I'm afraid. I can sense a dark presence, but I can't quite identify who or what this K'Tora may be.
I sense that the entity is ancient, powerful, and evil. Its mind is alien, though, and hard for me to focus on."

What do we know about K'Tora? (If you have completed Buried Memories)

"The Sea Sload K'Tora was a practitioner of powerful mind magic. Even though you ended his threat, K'Tora left mind traps such as these around the island. We'll need to carefully dismantle the traps to save these adventurers."

Tell me about the spell you're performing.

"I've established a link with the three adventurers. It allows me to slow the progress of the mind trap while providing you with a way to enter the mindscape so you can set them free.
This takes a lot of energy, so I'd appreciate it if you hurry."

Upon entering through Oriandra's Link to Cainar's Mind Trap:

Oriandra: "Ah, good. The link is working perfectly!"

Upon heading closer towards Cainar:

Pre-release outfit

Oriandra: "There's Cainar. You need to convince him that this is all an illusion."

Once Cainar is approached, Oriandra will speak to him.

Oriandra: "Cainar, listen to me!"

Cainar: "Oriandra? Why are you in my head?"

Oriandra: "There's no time for research. You need to get out of there."

Cainar: "And you need to ask permission before interrupting someone's thoughts!"

Cainar: "But thank you for sending me an assistant. We'll collect those samples in no time!"

Oriandra: "Just hurry before the mind trap snaps shut!"

Once all three spell particles have been acquired:

Oriandra: "Well done! Now return to Cainar and convince him to wake up."

After leaving Cainar's Mind Trap, Oriandra will point you towards the next adventurer who needs rescuing:

Oriandra: "Next, you need to free the Orc warrior named Grog. He should be deeper in the ruins."

Talking to Oriandra in the central section of the ruins, alongside Cainar:

"I sense Grog in the northern section of the ruins. I'll get Cainar to help me with the link as soon as he recovers from his ordeal."

Upon nearing Grog:

Oriandra: "Grog is close. Strange, I don't sense K'Tora's dark power, though."

Cainar: "Hmm. I think he resisted the mind trap on his own, but he's still unconscious."

Oriandra: "Wake him up, please."

After finding Grog and tossing water over him:

Grog: "Hey!"

Oriandra: "That wasn't just water …."

Cainar: "No matter. It worked, didn't it?"

Grog: "And they wonder why I drink so much."

Oriandra: "Focus, Grog. Make your way back to Cainar and me."

Grog: "Yeah, yeah. I'll be right there."

Cainar: "I've got Grog. You go find Miriya."

Talking to Oriandra in the central room of the ruins, alongside Cainar and Grog:

"Find the Redguard named Miriya. I sense her somewhere deep within the ruins."

Upon nearing Miriya:

Oriandra: "There's Miriya. Be careful in there. I sense her mind trap is nearly complete."

Upon heading closer towards Miriya in her mind trap:

Sharbashana: "Remember to keep your cowl low, Miriya. Stay out of trouble. Be invisible. Survive."

Miriya: "I will, Mama."

Miriya: "Mama?"

Oriandra: "Miriya's losing herself. Find items she holds dear and help her remember."

When observing Miriya's memory of the Dark Brotherhood:

Speaker Ancurio: "I offer you a place with us. A home, a family. If you promise to serve."

Miriya: "I promise, Speaker. Show me the way."

Oriandra: "These memories represent turning points in Miriya's life. The choices that made her who she is. Help her remember!"

After leaving Miriya's Mind Trap:

Miriya: "That was … disorienting."

Oriandra: "Cainar, bring Miriya here, please."

Cainar: "If you insist. I'm not fully recovered yet, though, so this is probably my last spell for a while."

Oriandra: "Just do it. Our friend can return on—"

Cainar: "Oriandra!"

Oriandra: "K'Tora's mind trap … I set it off …."

When entering Oriandra's Mind Trap:

Oriandra: "Listen closely. I've maintained our link, but just barely."

Oriandra: "I used the link to anchor part of myself to you."

Oriandra: "When the mind trap sends my darker aspects against you … kill them."

Oriandra: "That will destroy the mind trap and set me free."

Oriandra: "Trust me, it's the only way."

When approaching Oriandra in her mind trap, Oriandra's Anger is summoned:

Oriandra: "My mind! It's coming apart!"

Once Oriandra's Fear is summoned:

Oriandra: "My darkest aspects! You need to destroy them!"

Once Oriandra's Rage is summoned:

Oriandra: "Such anger … such hatred!"

After destroying all the projections:

Oriandra: "I'm free! Use Cainar's link and I'll see you in the waking world."

Once you have rescued her from the Mind Trap, you can speak with her:

"That was … totally exhausting! Thank you for trusting me and for helping me break K'Tora's mind traps. I couldn't have done it without you."

Is the threat from the mind traps over now?

"This particular danger has passed, but I will alert my colleagues in the Psijic Order to be on their guard. I suggest that you and these others remain vigilant as well.
In the meantime, take this as a token of my appreciation."

This will then complete the quest. Talking to her straight after the quest will result in her saying the following:

"Your help has been invaluable. I will never forget the service you have provided, both for these poor adventurers and for me."

A Pearl of Great Price

Upon finding her in Sotha Sil's study:

"You must be the adventurer that Valsirenn was going on about. Allow me to be the first to welcome you to our secret island.
Oh. I suppose you already talked to the Ritemaster, seeing as you're here in Ceporah Tower."

If you have already met her before:

"I knew it the moment we met back at the ruins. I sensed there was something special about you. The fact that Valsirenn hasn't stopped talking about you just confirms my original assessment. I'm glad I was able to help you escape that mind trap."

The rest of the dialogue is the same.

The Ritemaster sent me to get an amplification elixir for the ritual they're conducting.

"That strange pearl has certainly been reluctant to reveal its secrets. The Ritemaster hates it when an inanimate object refuses to cooperate.
Regarding the amplification elixir, I just cataloged it. It's a Sotha Sil creation, as you'd expect."

Sotha Sil's a member of the Psijic Order?

"Hmm? What? No, not in the traditional sense. He's not one of our monks, if that's what you're asking. More like an honorary member, I guess you'd say.
According to my records, the silver vial should be right over there."

I'll find it.

"As soon as the pearl arrived via Valsirenn's transference spell, the Ritemaster gathered the Conclave to prepare an augury ritual. He's been cycling sages through to keep them fresh while slowly increasing the intensity of the ritual."

So why aren't you helping with the ritual?

"I'm the Ritemaster's acolyte. I have other duties to perform. Besides, such a complex ritual requires the power of the Conclave of the Eleven Forces. I'm not that strong yet.
Under the Ritemaster's tutelage, I expect to attain that rank. One day."

How did an imperial end up in the Psijic Order?

"Despite opinions to the contrary, being an Altmer isn't a prerequisite for membership in the Psijic Order. The Ritemaster noticed my potential and invited me to join.
I had a year to consider the offer, but I made my decision immediately."

If the player is a High Elf, the dialogue for this question will be slightly different:

How did a non-High Elf end up in the Psijic Order?

"Why does every High Elf think they're superior to the rest of us? Being an Altmer isn't a prerequisite for joining the Psijic Order. The Ritemaster saw my potential and honored me with an invitation.
I'm proud of what I've accomplished here."

I'm not sure I understand where we are. How did the Psijics hide Artaeum?

"I'm not allowed to reveal where you are or how our magic works, other than to tell you that you have arrived upon the fabled island of the Psijic Order, Artaeum.
While we're not currently part of Nirn's reality, we still keep track of events there."

How do you manage to keep track of events on Nirn from wherever this is?

"I could say we have our ways and leave it at that, but you deserve a better explanation.
The Ritemaster sends Psijics back to the world to perform tasks and gather information. Plus, we have powerful scrying magic that reveals all sorts of details."

I better find that elixir the Ritemaster requested.

"I was examining the vial of amplification elixir myself just a short time ago. It should be right over there."

Once you have the elixir:

"Yes, that's the elixir. Now take it to the Ritemaster. There's no time to waste."

If you return to her after having talked to the Ritemaster, she cannot be talked to.

Buried Memories

Oriandra rushes in the Ritemaster's study:

Oriandra: "Ritemaster! The abyssal pearl. It's gone!

Ritemaster Iachesis: "Gone? How? I set the protections personally!"

You can then speak with her to learn about what happened:

"How could the abyssal pearl disappear like that? It makes no sense."

When was the last time anyone saw the abyssal pearl?

"A few hours ago. We left in the scrying pool in the main gallery while the members of the Conclave of the Eleven Forces went to deal with other matters of importance. When I returned, I immediately noticed that the pearl was missing."

Didn't the Ritemaster place protections on the pearl?

"Yes. That's standard procedure when dealing with an unknown relic. But that just makes the pearl's disappearance more troubling. Something about this feels ... wrong."

What is the Conclave of the Eleven Forces?

"The Conclave serves as the Order's ruling body. It takes its name from the Eleven Forces of nature that we revere and follow as part of the Old Ways. The Conclave assists the Ritemaster with the matters of study, policy, and significant research."

We'll get to the bottom of this.

Speaking to her again before heading to the main chamber:

"Go ahead. The Ritemaster is expecting you in the main gallery. I'll be along shortly."

Oriandra is seen briefly at the end of the quest, on her way out of the Ritemaster's study:

Valsirenn: "As you wish, Ritemaster. I shall travel to Lillandril immediately."

Oriandra: "And I'll send word to the Eye of the Queen."

If you have abandoned the quest, outside Ceporah Tower you'll find Oriandra in a state of disbelief:

"This is terrible! The Ritemaster and the Conclave of the Eleven Forces were hoping to learn more from the abyssal pearl, but then the pearl vanished!"

The abyssal pearl vanished? Tell me what happened.

"I'm not sure. It was in the scrying pool in the main gallery one moment, and then the next it was gone. That's why the Ritemaster sent me to look for you. He needs your help."

Where's the Ritemaster now?

"He's with Valsirenn, using the scrying pool to try to track down the missing pearl. If it's anywhere on Artaeum, the Ritemaster will find it. That's what the scrying pool is for. Please, head into Ceporah Tower and see what the Ritemaster needs."

I'll go to Ceporah Tower and talk to the Ritemaster.

Lost in Translation

Enter the Ritemaster's Study and Oriandra will be in the middle of trying to translate the unknown language in the Ritemaster's memory:

Oriandra: "Not derived from Ayleid, though I see a possible correlation to Daedric linguistic patterns …."

Speaking to her:

"Who? Oh! Don't you know not to interrupt a sage when she's deep in concentration?
I suppose the Ritemaster sent you to see how my research was coming along? I've listened to his memory over and over, and I examined every relevant tome I could find."

Have you been able to identify the unknown language?

"Not yet. The master of the House of Reveries sent me his work. It relates to a similar language seen in the ruins of Ebon Stadmont, but I only understand a little of it.
I wish Leythen was still one of us. He was our language expert."

Leythen's an expert on ancient languages?

"Ancient languages and battle magic, to name just a few. Leythen betrayed us and I don't trust him, but I've reached a dead end. We need help and he's the best option I can think of.
Take the notes and show them to Leythen. What do we have to lose?"

I'll take the notes and talk to Leythen.

"I'll let the Ritemaster know what I proposed. He may not like it, but he's always telling us to utilize every available resource. I think this qualifies.
You'll find Leythen in Valsirenn's study. See if you can convince him to translate the words."

Do you really expect Leythen to help us?

"I have no idea, but it's worth a try. I know Leythen and the Ritemaster were friends. I don't believe Leythen would purposely try to harm Iachesis.
On the other hand, if Leythen thinks that helping us will help his cause, he'll jump at the chance."

Why do you think Leythen joined forces with Mephala?

"I suppose it had something to do with his daughter. Ealdaawe was a beautiful girl. Smart, sweet, and full of energy. She brightened the entire island!
When she fell ill, Leythen and Valsirenn grew apart. It was how they dealt with the tragedy."

The Psijic Order couldn't save her?

"Don't you think we tried? The Ritemaster, Valsirenn, the entire Conclave. But nothing helped. She grew weaker and weaker. And then she was gone.
Val threw herself into her work after that. Leythen just grew more distant."

Shouldn't Valsirenn ask Leythen for this favor?

"Only if you want to guarantee that Leythen refuses to help us. Haven't you seen them since they were reunited? Val wants to kill him and Leythen hates her with a passion.
They used to be so in love. Now it breaks my heart to see them like this."

After returning from Ebon Stadmont, you'll find the Ritemaster dressing down the psijic:

Ritemaster Iachesis: "Oriandra, you should have consulted me beforehand."

Earl Leythen: "She saw an opportunity and she took it, Iachesis."

Ritemaster Iachesis: "Silence, Leythen! Need I put you in chains to remind you of your status here?"

Oriandra: "I'm sorry, Ritemaster. We should have asked permission. It won't happen again."

Oriandra will quietly leave.

Upon returning from the Evergloam, Orianda will greet the now smaller group:

Oriandra: "Valsirenn … where's the Ritemaster?"

Valsirenn: "Nocturnal killed him. We couldn't stop her."

Oriandra: "No … that's not possible."

Speak to her:

"This doesn't make any sense! What happened to the Ritemaster?"

Nocturnal killed him. She has the Heart of Transparent Law now.

"I don't believe it. The Ritemaster … Iachesis … he's the best of us. Besides, I thought only he could reveal the Heart's hidden location."

He hid the Heart in his own chest. Nocturnal tore it out and killed him.

"I knew he was remembering things, but I had no idea he was so desperate. To make a deal with a Daedric Prince? Even to foil the Sea Sload, that was just … foolish. In retrospect, though, I might have done the same.
How do we beat the triad now?"

I don't think the triad exists any more. Nocturnal took the Heart for herself.

"Nocturnal betrayed the other Princes? That's … actually, that's rather typical, from what I've read.
Without the Heart, without the Ritemaster, what are we supposed to do now?"

We have to find another way to stop Nocturnal.

"I'm not sure there is another way. With the Heart of Transparent Law, Nocturnal can control the Crystal Tower. And with the Crystal Tower, she can … well, I'm not sure why she wants the tower.
We'll need to consult a few experts about that."

A Necessary Alliance

After Ritemaster lachesis' death, Oriandra will be determined to focus on what can be done.

"Grief does us no good unless we use it to focus our commitment. We need to rally our forces. It's time to turn this Daedric tide before the waters of Oblivion overwhelm us.
Thankfully, Sotha Sil returned while you traveled the Dreaming Cave."

Did Sotha Sil have any news to share?

"Sotha Sil said he had information meant only for Ritemaster lachesis's ears. He asked me to send the Ritemaster to see him when he returned from traveling the Dreaming Cave."

Someone needs to tell Sotha Sil that the Ritemaster is dead.

"We also need to convince Sotha Sil to share the news he brought with us. But without the Ritemaster, he may decide to simply depart. Like all the members of the Dark Elf Tribunal, he can be very enigmatic.
Maybe you should talk to him."

I'll speak to Sotha Sil.

Speaking to her again before leaving the cave:

"You'll find Sotha Sil in his study on the upper levels of Ceporah Tower.
In the meantime, I'll make sure Valsirenn and the Golden Knight see the Psijic healers. I think we'll need them at their best before too long."

When you enter Valsirenn's Study, you'll witness a short exchange between Valsirenn and Oriandra:

Oriandra: "Valsirenn, stop! You're going to kill him!"

Valsirenn: "Arrgh! Fine! Let our friend finish the interrogation."

You can then speak to her:

"You got here just in time. I've never seen Valsirenn with such … murder in her eyes."

When speaking to her after hearing Leythen's proposal, she will have some concerns:

"As a member of the Psijic Order, I've counseled with Daedra in the past. But to trust one enough to form an alliance is almost unheard of!
I'll leave it to Valsirenn and the rest of the Conclave to determine the wisdom of such a risky course."

The Crystal Tower

You can find Oriandra with Razum-dar, south of the Ceporah Tower, past the wayshrine.

Razum-dar: "This is Artaeum? Raz is impressed—and truly frightened by the very strange sky."

Oriandra: "Ah, here comes your friend now!"

Oriandra: "Just remember, you were never here. The Conclave isn't fond of visitors."

Razum-dar: "For a place that doesn't like visitors, Raz thinks it's pretty busy, yes?"

Speaking to her before and after talking to Raz:

"Razum-dar sent word that he needed to talk to you, so I took it upon myself to bring him to Artaeum.
I assumed you'd want to speak to him before you go off to assault the Crystal Tower."

Presumably after she sees Razum-dar safely back to Summerset, Oriandra will be in the Dreaming Cave with the rest of your party, where she can be spoken with:

"I can't recall a time where the Psijic Order confronted a threat such as this. We've dealt with all sorts of problems and cataclysmic events, but this is … different.
I think … I think the Ritemaster would be proud."

As everyone says their goodbye's before entering the portal, Darien will turn to Oriandra:

Darien Gautier: "Oriandra, if I die saving the world, know that our brief time together has made me a better man."

Oriandra: "What are you talking about?"

Darien Gautier: "Shh, it's all right to cry. I'll do my best to return to you. I promise."

Oriandra: "What just happened? What's that crazy knight talking about?"

After the portal is opened and the rest of the team has entered, you can speak to Oriandra again:

"Sotha Sil personally requested our help to maintain your connection to the Dreaming Cave. I know Valsirenn wanted to go with you, but just the thought of entering a tower that's bouncing through every level of reality scares me to no end.
Good luck."

A New Alliance

Speaking to her in the main chamber of Ceporah Tower:

"It's good to see you alive and well. Word has already spread about your daring exploits within the Crystal Tower. It's still a little hard to believe, truth be told.
Of course, there's so much left to do. I already have a list as long as my arm."

Valsirenn needs you to summon a council of influential Summerset citizens.

"That doesn't sound good. Is there another crisis I have yet to be informed about?"

The Crystal Tower's wards have weakened. We must convince the Sapiarchs to gather allies.

"I'd almost rather deal with another crisis than try to convince the Sapiarchs.
Still, it will be done. I'll even make sure to invite the Proxy Queen. Her palace should make for a suitable meeting place. Neutral ground, and all that."

Where can I find Sotha Sil? Valsirenn wants him to join the council as well.

"Sotha Sil's in his study, preparing to depart. He never seems to stick around for very long. I suggest you hurry if you want to catch him.
I'll meet you in front of the Proxy Queen's palace in Alinor. Meet me there after you talk to Sotha Sil."

Speaking to her again before heading for Sotha Sil's study:

"Good luck getting Sotha Sil to attend this council. He's never been particularly excited over the idea of social gatherings.
In the meantime, I have missives to send and leaders to collect. Lucky me."

Arrive at the Alinor Royal Palace and Oriandra will be waiting for you on the front steps:

"Finally, you arrived.
We were able to gather everyone together, but they've already started the meeting. Valsirenn tried to make them wait, but the Sapiarchs demanded to know what was happening."

How's the meeting going so far?

"To be honest? Not great. Even the Proxy Queen is hesitant to accept our request. As always, everyone's so worried about proper High Elf decorum that they refuse to see reason.
I'm just not sure how we're going to win this one."

I'll go inside and see if I can help.

Orianda turns and enters the palace. Follow her and she'll direct you to the council chamber:

Oriandra: "Everyone's gathered in the council chamber. You should go inside."

Speaking with her before addressing the meeting:

"The Sapiarchs aren't capable of protecting the Crystal Tower alone, but they're just too stubborn to admit it. It's up to you to convince them."

Before you get a chance to speak to her again, she disappears back to Artaeum.

Dialogue

After completion of the main Summerset questline, Oriandra can be found and spoken to in Sotha Sil's vacant study:

"I never knew how many curiosities Sotha Sil had hidden away in his study.
It'll take some time to sort through it all, but it's well worth the effort. These devices could be very useful to the Psijic Order's current research."

What are you doing?

"I'm sorting through the many wonders that Sotha Sil saw fit to leave behind.
Silly as it may sound, this study has been left alone for hundreds of years. Out of Respect for Sotha Sil's privacy, of course."

And Sotha Sil is fine with you being in here?

"Of course! I made sure to ask before he left. Though his reply wasn't so much a yes as a lecture on the importance of curiosity and the need to challenge regulation with innovation.
But that seemed to give me permission, far as I could tell."

Fair enough. What are you up to now?

"Mostly, I'm just trying to help Valsirenn. As long as she's the Ritemaster, that's where my allegiance lies.
She's better at the job than she thinks, even if she considers it a temporary position."

Temporary?

"She made it known she wanted the Conclave to consider other candidates. We'll see where that goes.
In the meantime, I'll help her as I can. And I'll organize Sotha Sil's experiments. It calms me so."

Notes

• In Razum-dar's Journal, Chapter 7, Celarus says he was looking for Oriandra to help him fight Q'fura the Pendulous, and has Razum-dar assist him instead. Her full name is mentioned as being Oriandra Attus, though is never referred to in-game as this, as (according to Ulliceta gra-Kogg) Psijics must leave their old lives behind when joining the order, including surnames.
• During the alpha state of Summerset, Oriandra wore The Aurbic Eye head marking, which was later removed from her character by the time Update 18 was on the PTS.
• During the quest Whispers from the Deep, if you have met her on Artaeum first before starting this quest, upon talking to her the first time, she will use the friendly dialogue intro where she doesn't mention the words "mind trap", but the question for you to use afterward is still displayed as "Mind trap? I don't understand.".