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

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

Bioessence Hydra

Q: What type of card is Bioessence Hydra?

Bioessence Hydra is a Creature — Hydra Mutant. Its oracle text reads: "Trample This creature enters with a +1/+1 counter on it for each loyalty counter on planeswalkers you control. Whenever one or more loyalty counters are put on planeswalkers you control, put that many +1/+1 counters on this creature. Power/Toughness: 4/4"