Is Brimaz, Blight of Oreskos legal in Standard, Modern, and Commander?

Brimaz, Blight of Oreskos is legal in: Legacy, Vintage, Commander.

Brimaz, Blight of Oreskos

Q: What type of card is Brimaz, Blight of Oreskos?

Brimaz, Blight of Oreskos is a Legendary Creature — Phyrexian Cat. Its oracle text reads: "Whenever you cast a Phyrexian creature or artifact creature spell, incubate X, where X is that spell's mana value. (Create an Incubator token with X +1/+1 counters on it and "{2}: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.) At the beginning of each end step, if a Phyrexian died under your control this turn, proliferate."

Legendary Creature — Phyrexian Cat

Whenever you cast a Phyrexian creature or artifact creature spell, incubate X, where X is that spell's mana value. (Create an Incubator token with X +1/+1 counters on it and ": Transform this token." It transforms into a 0/0 Phyrexian artifact creature.)

At the beginning of each end step, if a Phyrexian died under your control this turn, proliferate.

Set March of the Machine Commander

Rarity Mythic Rare

Mana Value 4

Artist Uriah Voth

Collector # 2

Scryfall Gatherer