HuralKar, the Contractor

Bestow {3}{b}{r} (If you cast this spell 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)
Flying
Each creature your opponents control gets
-1/-1, HuralKar and enchanted creature get
+1/+1 for each creature effected this way
Enchanted creature has Flying