Banishment

One creature you can see within range must make a CHA save or be transported to a harmless demiplane for the duration. While there, it is incapacitated. When the effect ends, it reappears where it left or in the nearest unoccupied space. If the target is an Aberration, Celestial, Elemental, Fey, or Fiend and the effect lasts the full minute, it does not return and is instead transported to a random location on a plane associated with its type.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.