Jungle Hydra

Jungle Hydra gets +{x}/+{x} counters for every creature that is cast into play, every forest in play, and every time Jungle Hydra takes {x} damage and Jungle Hydra has Flying and Trample.
{x}{t}: create {x} 1/1 Hydra hatch-ling creature tokens or put {x}+1/+1 counters on another creature that shares mana cost with Jungle Hydra.
"Where is this heavy breathing coming from..."