Is Exquisite Huntmaster legal in Standard, Modern, and Commander?

Exquisite Huntmaster is legal in: Legacy, Vintage, Commander, Pauper.

Exquisite Huntmaster

Q: What type of card is Exquisite Huntmaster?

Exquisite Huntmaster is a Creature — Elf Warrior. Its oracle text reads: "When this creature dies, create a 1/1 green Elf Warrior creature token. Encore {4}{B} ({4}{B}, 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.) Power/Toughness: 4/2"

Creature — Elf Warrior

When this creature dies, create a 1/1 green Elf 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.)