Drax, The Destroyer

Drax, The Destroyer enters the battlefield
with three +1/+1 counters on it.
Whenever another creature you control dies
if it had a +1/+1 counter on it, put a +1/+1
counter on Drax.
When Drax dies, create an X/X black and green
Hydra creature token, where X is the number of
+1/+1 counters on Drax.