Sigiled Leotau

Bestow {2}{g}{w}{u} (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.)
Flying
Enchanted creature gets +2/+2 and has flying.
As long as Sigiled Leotau is attached to a creature, enchantments you control have exalted.