Is Ramosian Sky Marshal legal in Standard, Modern, and Commander?

Ramosian Sky Marshal is legal in: Legacy, Vintage, Commander.

Ramosian Sky Marshal

Q: What type of card is Ramosian Sky Marshal?

Ramosian Sky Marshal is a Creature — Human Rebel. Its oracle text reads: "Flying {7}, {T}: Search your library for a Rebel permanent card with mana value 6 or less, put it onto the battlefield, then shuffle. *The Cho-Arrim fell from the sky onto Mercadia City like a vengeful rain.* Power/Toughness: 3/3"