Egg-laying chicken

When Egg-laying chicken enters the battlefield, create a white 0/0 egg token with Nullbuff (Being at 0 toughness doesn't destroy it, it is destroyed when it takes any amount of damage, creatures attacking it gain trample)
{2}{w}: Hatch target egg. (That egg becomes a copy of this card, except it only has 1 power and 1 toughness)