Great Hunter Hydra

Trample, Hexproof
This creature enters the battlefield with a
number of +1/+1 counters on it equal to the
amount of mana spent to cast it.
Whenever Damage is dealt to Great Hunter
Hydra, prevent that damage and remove that
many +1/+1 counter from Great Hunter Hydra
and create double that many 1/1 green Snake
creature tokens with Hexproof.