Cairith's Corral

Shout a challenge and make a melee spell attack against a hostile creature that is Large or smaller. On a success, you summon a spectral spherical cage that traps both you and the hostile creature inside. The cage is 30 feet wide and 20 feet tall, and is an immobile, solid barrier that prevents matter from passing through it. It can be magically dispelled or suppressed (as if under the effects of the antimagic field spell). Creatures only partially within the perimeter of the cage and those too large to fit inside the cage are pushed away from the cage until they are completely outside it.

A creature inside the cage can’t leave it by nonmagical means. The spell ends once you or the hostile creature are reduced to 0 hit points.