W. D. Gaster

+2: Exile up to X target creatures until the start of your next turn.
-1: Exile target creature, after 3 turns put that creature on your side of the field if W. D. Gaster is still under your control.
-X: Exile all creatures, after 3 turns bring them all back on your side of the field if you still control W. D. Gaster.