Is Sunflare Shaman legal in Standard, Modern, and Commander?

Sunflare Shaman is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Sunflare Shaman

Q: What type of card is Sunflare Shaman?

Sunflare Shaman is a Creature — Elemental Shaman. Its oracle text reads: "{1}{R}, {T}: This creature deals X damage to any target and X damage to itself, where X is the number of Elemental cards in your graveyard. *A spark to light the guttered heart.* Power/Toughness: 2/1"