Is Axavar, Fate Thief legal in Standard, Modern, and Commander?

Axavar, Fate Thief is legal in: Historic.

Axavar, Fate Thief

Q: What type of card is Axavar, Fate Thief?

Axavar, Fate Thief is a Legendary Creature — Drix Pirate. Its oracle text reads: "Void — At the beginning of your end step, if a nonland permanent left the battlefield this turn or a spell was warped this turn, discard a card, then heist target opponent's library. Warp {B/R} Power/Toughness: 4/3"

Legendary Creature — Drix Pirate

Void — At the beginning of your end step, if a nonland permanent left the battlefield this turn or a spell was warped this turn, discard a card, then heist target opponent's library.

Warp