```
Warlock Otherworldly Patron: Tartuzi, The Eternal Lock
3rd-level Living Oubliette feature
Your former life as a wizard is a fractured ruin, but the habits remain.
You gain proficiency in Arcana and History.
You use Intelligence instead of Charisma as your spellcasting ability for all Warlock spells and features, including your Spell Save DC and Spell Attack Modifier.
When you cast a Warlock spell of 1st level or higher, you can over-channel the stolen memories stored within you. You gain a +2 bonus to either the Spell Save DC or the Spell Attack Roll for that casting. If you do, you immediately take Psychic damage equal to double the spell's level. This damage cannot be reduced or ignored by any means.
3rd-level Living Oubliette feature
The following spells are always prepared for you and do not count against your number of spells known.
| Warlock Level | Spells |
|---|---|
| 1st | Shield, Magic Missile |
| 3rd | Misty Step, Hold Person |
| 5th | Counterspell, Fireball |
| 7th | Greater Invisibility, Dimension Door |
| 9th | Wall of Force, Modify Memory |
3rd-level Living Oubliette feature
As a Bonus Action, you force a creature within 30 feet of you to meet your gaze. Your eyes reflect the decaying eternity of Tartuzi's cell — a sight no living mind was meant to witness.
The target must succeed on a Wisdom saving throw against your Spell Save DC or become Frightened of you until the end of your next turn. While Frightened this way, the creature's AC is reduced by an amount equal to your Intelligence modifier (minimum 1).
You can use this feature a number of times equal to your Proficiency Bonus, regaining all uses on a Long Rest.
6th-level Living Oubliette feature
Tartuzi feeds on the objective truths of others to mend her weakening chains. When a creature you can see within 60 feet of you succeeds on a Saving Throw, you can use your Reaction to force them to reroll. They must use the new roll.
On Success. If the creature fails the second roll, you regain Hit Points equal to the total Psychic damage you have taken from Mnemonic Hemorrhage since the end of your last Long Rest.
On Failure. If the creature still succeeds, you are Blinded until the end of your next turn as the feedback of their certainty burns your retinas.
You can use this feature a number of times equal to your Proficiency Bonus, regaining all uses on a Long Rest.
10th-level Living Oubliette feature
Your anatomy is now a complex series of metaphysical tumblers and pins. The prison is no longer something Tartuzi carries — it is something you are.
You gain resistance to Psychic and Poison damage.
Once per Long Rest, when you drop to 0 Hit Points but are not killed outright, you can choose to activate this feature. The effect lasts for a number of rounds equal to 3, increasing by 1 when you reach 12th level and again at 14th level (maximum 5 rounds). For the duration:
When the effect ends, Tartuzi's presence snaps back into her prison, leaving your body ruined. You immediately gain 5 levels of Exhaustion and remain at 1 Hit Point.
14th-level Living Oubliette feature
You can force a creature to solve the paradox that keeps Tartuzi bound — an equation with no answer, a lock with no key, a prison that exists by virtue of being impossible.
As an Action, choose one creature you can see within 60 feet of you. That creature must make an Intelligence saving throw against your Spell Save DC.
On a Failure. The creature's Intelligence score becomes 1. They are effectively catatonic — unable to cast spells, understand language, or take any Action other than to follow you in a daze. This effect lasts for 1 hour.
When the hour ends, or if the target is reduced to 0 Hit Points while under this effect, they take 10d10 Psychic damage. If this damage kills the target, you immediately regain one expended Warlock Spell Slot.
Once you use this feature, you cannot do so again until you finish a Long Rest.