Is Amphin Mutineer legal in Standard, Modern, and Commander?

Amphin Mutineer is legal in: Legacy, Vintage, Commander.

What type of card is Amphin Mutineer?

Amphin Mutineer is a Creature — Salamander Pirate. Its oracle text reads: "When this creature enters, exile up to one target non-Salamander creature. That creature's controller creates a 4/3 blue Salamander Warrior creature token. Encore {4}{U}{U} ({4}{U}{U}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)"

Amphin Mutineer

Creature — Salamander Pirate

When this creature enters, exile up to one target non-Salamander creature. That creature's controller creates a 4/3 blue Salamander Warrior creature token.

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)