Bovempotamus

Bestow {4}{w}{w}{w} (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.)
Converge -- Bovepotamus and enchanted creature have protection from each color of mana speant to cast Bovepotamus. This effect does not effect auras.
Enchanted creature gets +4/+4.