Is Tuskeri Firewalker legal in Standard, Modern, and Commander?

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

Tuskeri Firewalker

Q: What type of card is Tuskeri Firewalker?

Tuskeri Firewalker is a Creature — Human Berserker. Its oracle text reads: "Boast — {1}: Exile the top card of your library. You may play that card this turn. (Activate only if this creature attacked this turn and only once each turn.) *"Toralf blessed me with fire. I am worthy of Starnheim!"* Power/Toughness: 3/2"

Creature — Human Berserker

Boast — : Exile the top card of your library. You may play that card this turn. (Activate only if this creature attacked this turn and only once each turn.)