Eggbearer

Whenever a creature you control dies, if
eggbearer has no egg counters on it, you may pay
{g}. If you do, exile that creature, put an egg
counter on eggbearer, and create a 0/1 green Egg
creature token with defender.
{2}{b}{b}, {t}, Sacrifice an Egg token, remove an
egg counter from Eggbearer: Return target
creature card exiled with Eggbearer to the
battlefield.