Is Dark Apostle legal in Standard, Modern, and Commander?

Dark Apostle is legal in: Legacy, Vintage, Commander.

Dark Apostle

Q: What type of card is Dark Apostle?

Dark Apostle is a Creature — Astartes Warlock. Its oracle text reads: "Gift of Chaos — {3}, {T}: The next noncreature spell you cast this turn has cascade. (When you cast that spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)"

Creature — Astartes Warlock

Gift of Chaos — , : The next noncreature spell you cast this turn has cascade. (When you cast that spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)