Is Karai, Future of the Foot legal in Standard, Modern, and Commander?

Karai, Future of the Foot is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Karai, Future of the Foot

Q: What type of card is Karai, Future of the Foot?

Karai, Future of the Foot is a Legendary Creature — Human Ninja. Its oracle text reads: "Sneak {2}{W}{B} (You may cast this spell for {2}{W}{B} if you also return an unblocked attacker you control to hand during the declare blockers step. She enters tapped and attacking.) Whenever Karai deals combat damage to a player, return target creature card from your graveyard to your hand. If her sneak cost was paid this turn, instead return that card to the battlefield."

Legendary Creature — Human Ninja

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

Whenever Karai deals combat damage to a player, return target creature card from your graveyard to your hand. If her sneak cost was paid this turn, instead return that card to the battlefield.

Set Teenage Mutant Ninja Turtles

Rarity Uncommon

Mana Value 3

Artist Lius Lasahido

Collector # 151

Scryfall