Khans of Tarkir — Mythic
Creature Snake Hydra
Hooded Hydra enters the battlefield with X +1/+1 counters on it.
When Hooded Hydra dies, create a 1/1 green Snake creature token for each +1/+1 counter on it.
As Hooded Hydra is turned face up, put five +1/+1 counters on it.