Mass Change is Dormammu's teleportation special. He teleports to an area relative to the opponent based on the button pressed. L puts Dormammu in the air in front of his enemy, M warps him above and behind his foe and H puts him directly above his opponent. Mass Change M is one of Dormammu's greatest assets because it allows him to quickly get behind his adversary at relatively low risk. This is great both for fullscreen cross-up offense using crossover assists or Dark Matter. It's also useful for evading incoming attackers and getting out of tight corners.