Is Medomai the Ageless legal in Standard, Modern, and Commander?

Medomai the Ageless is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Medomai the Ageless

Q: What type of card is Medomai the Ageless?

Medomai the Ageless is a Legendary Creature — Sphinx. Its oracle text reads: "FlyingWhenever Medomai the Ageless deals combat damage to a player, take an extra turn after this one.Medomai the Ageless can't attack during extra turns."

Legendary Creature — Sphinx

Flying<br>Whenever Medomai the Ageless deals combat damage to a player, take an extra turn after this one.<br>Medomai the Ageless can't attack during extra turns.

Set Pioneer Masters

Rarity Rare

Artist David Palumbo