Bestow {2}{B}{B} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Nighthowler and enchanted creature each get +X/+X, where X is the number of creature cards in all graveyards.
![Nighthowler (Game Day) (Extended Art) [Theros Promos]](http://www.cosmicgames.com/cdn/shop/files/77b85aef-2f4b-4318-8f29-8adfbee92628_58c07771-1178-4cb0-98a8-e799f77c9eb5.png?v=1759237157&width=1445)
