Be Gone

The target hit by the attack roll takes an extra 5d10 Lighting damage from the attack. If the attack reduces the target to 50 Hit Points or fewer, the target must succeed on a Charisma saving throw or be transported to a harmless demiplane for the duration. While there, the target has the Incapacitated condition. When the spell ends, the target reappears 10 feet above the space it left or 10 feet above the nearest unoccupied space if that space is occupied taking twice the normal fall/bludgeoning damage 2d6