Dimensional Split

Summons a magic circle originating from the caster in a 100 ft radius will seal anything within the circle in another dimension. The seal will be fully complete after 4 rounds. Upon being hit or casting another concentration spell/cantrip the player must make a WIS saving throw to maintain concentration. Once complete every creature/player within the circle must make a DEX saving throw. If failed every creature/player within the circle is sealed.