Is Brainspoil legal in Standard, Modern, and Commander?

Brainspoil is legal in: Modern, Legacy, Vintage, Commander, Pauper.

What type of card is Brainspoil?

Brainspoil is a Sorcery. Its oracle text reads: "Destroy target creature that isn't enchanted. It can't be regenerated. Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)"

Brainspoil

Sorcery

Destroy target creature that isn't enchanted. It can't be regenerated.

Transmute (, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)