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

Wolfbriar Elemental is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Wolfbriar Elemental?

Wolfbriar Elemental is a Creature — Elemental. Its oracle text reads: "Multikicker {G} (You may pay an additional {G} any number of times as you cast this spell.) When this creature enters, create a 2/2 green Wolf creature token for each time it was kicked. Power/Toughness: 4/4"