Is Scaldkin legal in Standard, Modern, and Commander?

Scaldkin is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Scaldkin

Q: What type of card is Scaldkin?

Scaldkin is a Creature — Elemental. Its oracle text reads: "Flying {2}{R}, Sacrifice this creature: It deals 2 damage to any target. *The Temur believe that scaldkin are born when eruptions melt the frozen whispers of sleeping ancestors.* Power/Toughness: 2/2"