Void Sever Smite

The next time you land a weapon strike before this spell expires, your blow erupts with raw planar force. The attack deals an additional 5d10 force damage. If this hit leaves the creature with 50 hit points or fewer, it is torn from reality and banished.

A creature that does not originate from the current plane is instantly sent back to its native realm. A creature native to the plane instead disappears into a harmless demiplane, where it is incapacitated for the duration of the spell. When the spell ends, the creature returns to the space it vanished from, or to the nearest unoccupied space if that location is no longer available.