Is Rootcoil Creeper legal in Standard, Modern, and Commander?

Rootcoil Creeper is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Rootcoil Creeper

Q: What type of card is Rootcoil Creeper?

Rootcoil Creeper is a Creature — Plant Horror. Its oracle text reads: "{T}: Add one mana of any color. {T}: Add two mana of any one color. Spend this mana only to cast spells from your graveyard. {G}{U}, {T}, Exile this creature: Return target card with flashback you own from exile to your hand. Power/Toughness: 2/2"