Eclipsing Damnation

Conjuring the depths of the void, Eclipsing Damnation banishes a being chosen by the caster to a plane of existence at their discretion. The target must make a charisma saving throw upon casting or be forced through an ephemeral tear in reality. Once banished, the creature remains on the chosen plane until the spell is dispelled or they succeed on a charisma saving throw, which they can attempt once per hour. Each failed save causes the target to suffer 3d10 psychic damage as their mind strains against the foreign reality. Amidst chaotic fluctuations, a random environmental hazard reflective of the target plane might affect the creature, causing an additional 2d6 elemental damage.