Is Ob Nixilis of the Black Oath legal in Standard, Modern, and Commander?

Ob Nixilis of the Black Oath is legal in: Legacy, Vintage, Commander.

Ob Nixilis of the Black Oath

Q: What type of card is Ob Nixilis of the Black Oath?

Ob Nixilis of the Black Oath is a Legendary Planeswalker — Nixilis. Its oracle text reads: "+2: Each opponent loses 1 life. You gain life equal to the life lost this way. −2: Create a 5/5 black Demon creature token with flying. You lose 2 life. −8: You get an emblem with "{1}{B}, Sacrifice a creature: You gain X life and draw X cards, where X is the sacrificed creature's power." Ob Nixilis of the Black Oath can be your commander."