Horde Hydra

Hoard Hydra enters the battlefield with X +1/+1 counters on it.
When Hoard Hydra dies, for every +1/+1 counter
on Hoard Hydra create green and red hydra
creature token with "This creatures power and toughness is equal to the the number of creatures
you control."
Hoard Hydra costs {1} less for every creature you control.