Is Vastwood Animist legal in Standard, Modern, and Commander?

Vastwood Animist is legal in: Modern, Legacy, Vintage, Commander.

Vastwood Animist

Q: What type of card is Vastwood Animist?

Vastwood Animist is a Creature — Elf Shaman Ally. Its oracle text reads: "{T}: Target land you control becomes an X/X Elemental creature until end of turn, where X is the number of Allies you control. It's still a land. *He calls on the forests for counsel and summons the earth to his cause.* Power/Toughness: 1/1"