Ungui, Eagleback Archer.

Flying, Vigilance, First strike.
All other birds you control get +1/+2 and have vigilance and hexproof.
When Ungui, Eagleback Archer dies, create a 0/1 green egg creature token with {t}, Sacrifice this creature, "return target eagle from your graveyard to your hand."
{t}{g/w} Create a 2/1 green and white eagle creature token with flying.