Is Leonardo, Big Brother legal in Standard, Modern, and Commander?

Leonardo, Big Brother is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Leonardo, Big Brother

Q: What type of card is Leonardo, Big Brother?

Leonardo, Big Brother is a Legendary Creature — Mutant Ninja Turtle. Its oracle text reads: "Sneak {W} (You may cast this spell for {W} if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.) Leonardo gets +1/+0 for each other creature you control."

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.)

Leonardo gets +1/+0 for each other creature you control.

Set Teenage Mutant Ninja Turtles

Rarity Common

Mana Value 3

Artist InHyuk Lee

Collector # 14

Scryfall