Is Hooded Hydra legal in Standard, Modern, and Commander?

Hooded Hydra is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Hooded Hydra

Q: What type of card is Hooded Hydra?

Hooded Hydra is a Creature — Snake Hydra. Its oracle text reads: "This creature enters with X +1/+1 counters on it. When this creature dies, create a 1/1 green Snake creature token for each +1/+1 counter on it. Morph {3}{G}{G} As this creature is turned face up, put five +1/+1 counters on it."