Is Warden of the Grove legal in Standard, Modern, and Commander?

Warden of the Grove is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Warden of the Grove

Q: What type of card is Warden of the Grove?

Warden of the Grove is a Creature — Hydra. Its oracle text reads: "At the beginning of your end step, put a +1/+1 counter on this creature. Whenever another nontoken creature you control enters, it endures X, where X is the number of counters on this creature. (Put X +1/+1 counters on the creature that entered or create an X/X white Spirit creature token.) Power/Toughness: 2/2"

Creature — Hydra

At the beginning of your end step, put a +1/+1 counter on this creature.

Whenever another nontoken creature you control enters, it endures X, where X is the number of counters on this creature. (Put X +1/+1 counters on the creature that entered or create an X/X white Spirit creature token.)

Power/Toughness: 2/2

Set Tarkir: Dragonstorm

Rarity Rare

Mana Value 3

Artist Alexander Ostrowski

Collector # 166

Scryfall