Crow Sorcerer

Bestow {4}{u}{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, Other bird creatures you control
get +1/+1 and have hexproof.
Enchanted creature gets +3/+3 and has flying. Other bird creatures you control get +1/+1 and have hexproof.