Is Raphael, the Nightwatcher legal in Standard, Modern, and Commander?

Raphael, the Nightwatcher is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Raphael, the Nightwatcher

Q: What type of card is Raphael, the Nightwatcher?

Raphael, the Nightwatcher is a Legendary Creature — Mutant Ninja Turtle. Its oracle text reads: "Sneak {1}{R}{R} (You may cast this spell for {1}{R}{R} if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.) Attacking creatures you control have double strike."

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.)