Cygnus, Hell Summoner

+1: Each player puts the top card of their library into their graveyard. If it's a creature card, each opponent loses 2 life.
-3: Exile a creature from target players graveyard. Create a X/X black Horror creature token where X is the converted mana cost of that creature.
-X: Until end of turn, you may cast target creature from a graveyard with converted mana cost of X or less without paying its mana cost.