Eberron Banishment

You attempt to send one creature that you can see within range to another plane of existence. The target must succeed on a Charisma saving throw or be banished.

If the target is native to the plane of existence you're on, you banish the target to a harmless demiplane. While there, the target is incapacitated. The target remains there until te spell ends, at which point the target reappears in the space it left or in the nearest unoccupied space if that space is occupied.

If the target is native to a different plane of existence than the one you're on, the target is banished with a faint popping noise, returning to its home plane. If the spell ends before 1 minute has passed, the target reappears in the space it left or in the nearest unoccupied space if that space is occupied. Otherwise, the target doesn't return.

For the purposes of this spell, Mabaran and Irian undead are native to Eberron, but Khyberian and Dolurrhi undead are native to their respective planes. The Outer planes are divided into sections called layers, while Khyber is composed of demiplanes. While in Thelanis, Lamannia, Daanvi, Shavarath, the Hinterlands of Mabar, or Khyber, creatures native to another layer or demiplane can be banished to that layer or demiplane and not return when the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, you can target one additional creature for each slot level above 4th.