Banish to the Space Between Worlds

When you cast this spell, you gain 1 Contamination Level.

You banish a creature that you can see within range into the Space Between Worlds. Upon this roiling plane of chaotic potential, the target wanders incomprehensible vistas searching for a way back via strange and absurd exits. The target remains there for the duration or until it escapes.

The target can use its action to attempt to escape. When it does so, it makes an Intelligence check against your spell save DC. If it succeeds, it escapes, and the spell ends. On a failed check, the target takes 4d6 psychic damage.

When the spell ends, the target reappears in the space it left or, if that space is occupied, in the nearest unoccupied space.

Time passes differently for the target within the Space Between Worlds, and it perceives its time spent there as having lasted hundreds or perhaps thousands of years, even if it was only gone for rounds or minutes in the mortal world.

A creature which dies in the Space Between Worlds does not return.