Is Overgrowth Elemental legal in Standard, Modern, and Commander?

Overgrowth Elemental is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Overgrowth Elemental

Q: What type of card is Overgrowth Elemental?

Overgrowth Elemental is a Creature — Elemental. Its oracle text reads: "When this creature enters, put a +1/+1 counter on another target Elemental you control. Whenever another creature you control dies, you gain 1 life. If that creature was an Elemental, put a +1/+1 counter on this creature. Power/Toughness: 3/2"