Is Gix, Yawgmoth Praetor legal in Standard, Modern, and Commander?

Gix, Yawgmoth Praetor is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Gix, Yawgmoth Praetor?

Gix, Yawgmoth Praetor is a Legendary Creature — Phyrexian Praetor. Its oracle text reads: "Whenever a creature deals combat damage to one of your opponents, its controller may pay 1 life. If they do, they draw a card. {4}{B}{B}{B}, Discard X cards: Exile the top X cards of target opponent's library. You may play lands and cast spells from among cards exiled this way without paying their mana costs."

Gix, Yawgmoth Praetor

Legendary Creature — Phyrexian Praetor

Whenever a creature deals combat damage to one of your opponents, its controller may pay 1 life. If they do, they draw a card.

, Discard X cards: Exile the top X cards of target opponent's library. You may play lands and cast spells from among cards exiled this way without paying their mana costs.