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://paradoxtcg.com/cdn/shop/products/6e76a3f8-bfea-5fc1-a97e-6e17fcd7b638.jpg?v=1702346660&width=1445)
