Is Michelangelo, Improviser legal in Standard, Modern, and Commander?

Michelangelo, Improviser is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Michelangelo, Improviser

Q: What type of card is Michelangelo, Improviser?

Michelangelo, Improviser is a Legendary Creature — Mutant Ninja Turtle. Its oracle text reads: "Sneak {2}{G}{G} (You may cast this spell for {2}{G}{G} if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.) Whenever Michelangelo deals combat damage to a player, you may put a creature card and/or a land card from your hand onto the battlefield."

Legendary Creature — Mutant Ninja Turtle

Sneak (You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.)