Duelist’s Arena

Choose a creature you can see within range. That creature must make a Charisma saving throw. On a successful save, the spell has no effect. On a failed save, you and the target disappear, as you are both teleported to an extradimensional arena that is 90 feet long and 60 feet wide. Neither of you may leave this extradimensional space until the spell ends or one of you is reduced to 0 hit points.