Is Greta, Sweettooth Scourge legal in Standard, Modern, and Commander?

Greta, Sweettooth Scourge is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Greta, Sweettooth Scourge?

Greta, Sweettooth Scourge is a Legendary Creature — Human Warrior. Its oracle text reads: "When Greta enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") {G}, Sacrifice a Food: Put a +1/+1 counter on target creature. Activate only as a sorcery. {1}{B}, Sacrifice a Food: You draw a card and you lose 1 life. Power/Toughness: 3/3"