Ghalta Prime, Devouring Tyrant

{left} Trample, Haste, Menace This spell costs {X} less to cast, where X is the total power of creatures on the battlefield. When you cast this spell, you may draw {X} cards. Then, you may put any number of creature cards from your hand onto the battlefield. When Ghalta Prime, Devouring Tyrant enters the battlefield, it fights any number of other creatures.