Is Identity Thief legal in Standard, Modern, and Commander?

Identity Thief is legal in: Modern, Pioneer, Legacy, Vintage, Commander.

Identity Thief

Q: What type of card is Identity Thief?

Identity Thief is a Creature — Shapeshifter. Its oracle text reads: "Whenever this creature attacks, you may exile another target nontoken creature. If you do, this creature becomes a copy of that creature until end of turn. Return the exiled card to the battlefield under its owner's control at the beginning of the next end step."

Creature — Shapeshifter

Whenever this creature attacks, you may exile another target nontoken creature. If you do, this creature becomes a copy of that creature until end of turn. Return the exiled card to the battlefield under its owner's control at the beginning of the next end step.

Set New Capenna Commander

Rarity Rare

Mana Value 4

Artist Magali Villeneuve

Collector # 224

Scryfall Gatherer