Embelan, Ritual Beast

: Embelan, Ritual Beast starts with X loyalty, where X is the mana spent to cast this creature
-1: All non black creatures gain -1/-1 until end of turn, unless the creature's controller pays 1 mana for each creature affected this way.
-X: Return target creature from the graveyard to the battlefield with mana value X. It gains haste, but exile it in 2 turns.