Is Basilica Stalker legal in Standard, Modern, and Commander?

Basilica Stalker is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Basilica Stalker

Q: What type of card is Basilica Stalker?

Basilica Stalker is a Creature — Vampire Detective. Its oracle text reads: "Flying Whenever this creature deals combat damage to a player, you gain 1 life and surveil 1. (Look at the top card of your library. You may put it into your graveyard.) Disguise {4}{B} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.)"

Creature — Vampire Detective

Flying

Whenever this creature deals combat damage to a player, you gain 1 life and surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)