Is Skarrgan Firebird legal in Standard, Modern, and Commander?

Skarrgan Firebird is legal in: Modern, Legacy, Vintage, Commander.

Skarrgan Firebird

Q: What type of card is Skarrgan Firebird?

Skarrgan Firebird is a Creature — Phoenix. Its oracle text reads: "Bloodthirst 3 (If an opponent was dealt damage this turn, this creature enters with three +1/+1 counters on it.) Flying {R}{R}{R}: Return this card from your graveyard to your hand. Activate only if an opponent was dealt damage this turn. Power/Toughness: 3/3"