Hydra Hatchling

Defender
Hydra hatchling enters the battlefield with three growth counters on it.
At the beginning of your upkeep, remove a growth counter from Hydra Hatchling.
At the beginning of your upkeep, if hydra hatchling has no Growth counters on it, you
may pay {x}, if you do, create a green X/X
Hydra creature token.