Is Stromkirk Occultist legal in Standard, Modern, and Commander?

Stromkirk Occultist is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Stromkirk Occultist

Q: What type of card is Stromkirk Occultist?

Stromkirk Occultist is a Creature — Vampire Horror. Its oracle text reads: "Trample Whenever this creature deals combat damage to a player, exile the top card of your library. Until end of turn, you may play that card. Madness {1}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) Power/Toughness: 3/2"