Nighthowler

Enchantment Creature — Horror — {1}{B}{B}

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.)
This creature and enchanted creature each get +X/+X, where X is the number of creature cards in all graveyards.

Rarity: rare

EDHREC rank: 4397