Is Sly Instigator legal in Standard, Modern, and Commander?

Sly Instigator is legal in: Legacy, Vintage, Commander.

Sly Instigator

Q: What type of card is Sly Instigator?

Sly Instigator is a Creature — Human Wizard. Its oracle text reads: "{U}, {T}: Until your next turn, target creature an opponent controls can't be blocked. Goad that creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)"

Creature — Human Wizard

, : Until your next turn, target creature an opponent controls can't be blocked. Goad that creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)