Annihilating Eld'r-chicken

Vanishing X+1
Annihilator Y-1, where Y is the number of time
counters on Annihilating Eld'r-chicken
Annihilating Eld'r-chicken enters the battlefield
with twice X +1/+1 counters on it.
Annihilating Eld'r-chicken cannot be blocked by
less than or equal Y creatures.