Is Turnabout legal in Standard, Modern, and Commander?

Turnabout is legal in: Legacy, Vintage, Commander.

Turnabout

Q: What type of card is Turnabout?

Turnabout is an Instant. Its oracle text reads: "Choose artifact, creature, or land. Tap all untapped permanents of the chosen type target player controls, or untap all tapped permanents of that type that player controls."

Instant

Choose artifact, creature, or land. Tap all untapped permanents of the chosen type target player controls, or untap all tapped permanents of that type that player controls.

Set Dominaria Remastered

Rarity Uncommon

Mana Value 4

Artist Heather Hudson

Collector # 70

Scryfall Gatherer