I thought you didnt like the extra dimensional idea?
It's more that I don't like the idea of them being able to escape it with a
plane shift or the like, but if it's more that they're hallucinating they're in the Titan's dream rather than on a plane which is being shaped to match Andromidus's imagination that shouldn't be a problem.
Let me try to write something out:
Mist of Dreams (Su): Andromidus can produce a zone of gray mist that can trap creatures within phantasms of anything that the titan imagines. This mist emanates from Andromidus up to a maximum radius of 500 [
?] feet, and Andromidus can form it into any shape he desires provided the mist is continuous and remains in contact with his body. He can reshape the mist as a free action.
Any creature who sees or enters the mist must succeed at a DC
X Will save. If they make the save, they see the gray mist as a slight miasma so thin it only offers concealment to creatures or objects more than 100 feet away.
A creature who fails the Will save perceives the mist as an impenetrable gray fog that blocks all forms of mortal vision (even
true sight and similar effects), and should the creature be within the mist it is transferred to a dream-world of the Titan's imagination (see below). The creature experiences the transfer as a momentary sensation of falling through utter blackness after being enveloped by the fog. Creatures who are unaffected by the mist of illusions see the transferred creature apparently fade out of existence.
A dream-world created by Andromidus is an area up to 500 feet across surrounded by gray mists that contains whatever Andromidus imagines. Anything that tries to leave the dream world by entering the mist simply re-emerges from the mist at whatever spot Andromidus desires. Andromidus can create literally any creature, object or effect he desires within the dream-world. The only limit is is must fit within the size of the dream-world he has created.
Nothing that happens in the dream world is real. Everything, even the actions of creatures transferred into the mist, is a phantasm (as per the Illusion subschool). Any damage they take only exists in the dream-world, even damage inflicted by another real creature who was trapped in the dream. A creature who is killed only
appears to be dead. A creature who casts a spell or loses an item in a dream-world will find it still has the spell or item when it returns to the real world.
Andromidus can dissolve a dream-world and create a new one simply by imagining it. Trapped creatures will feel the same "falling into blackness" sensation as when they were first enveloped by the gray mist. Creatures that were "killed" in the previous dream will find themselves alive and fully healed with all their resources restored (unless Andromidus is imagining they've been injured or depleted, of course).
There are several ways to escape the mist of dreams. Firstly, Andromidus may simply release them. Secondly, the titan must concentrate to maintain the illusion, so if his concentration is broken the mist will vanish and free all the trapped creatures. Thirdly, a creature who realizes they are trapped in an illusion may escape from it by succeeding on a DC
X Will save. However, they may only attempt the save once every
Y minutes or whenever Andromidus replaces a dream-world with a new one.
A creature who has been freed from the mist reappears in exactly the same condition they were in when they entered it. Any objects they collected in a dream-world will normally have vanished, but if Andromidus desires he can use his Transmutation power (see below) to create real versions of objects from a dream-world for the creature to possess.
The save DC is Charisma-based and includes a +Z racial bonus.