Mother Hen

Other Chickens you control get +1/+1.
Vigilance
At the beginning of your upkeep, put an Egg artifact token into play. It has, "{2},{t}, Sacrifice this token: You gain 3 life." and "At the beginning of your upkeep, put a Hatch token on this token. If at any time it has 3 or more Hatch tokens on it, you may sacrifice it and put a 1/2 Chick creature token with haste into play."