Is Worst Fears legal in Standard, Modern, and Commander?

Worst Fears is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Worst Fears

Q: What type of card is Worst Fears?

Worst Fears is a Sorcery. Its oracle text reads: "You control target player during that player's next turn. Exile Worst Fears. (You see all cards that player could see and make all decisions for the player.)"

Sorcery

You control target player during that player's next turn. Exile Worst Fears. (You see all cards that player could see and make all decisions for the player.)

Set Pioneer Masters

Rarity Mythic Rare

Artist Eric Deschamps