Is Flame Sweep legal in Standard, Modern, and Commander?

Flame Sweep is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Flame Sweep

Q: What type of card is Flame Sweep?

Flame Sweep is an Instant. Its oracle text reads: "Flame Sweep deals 2 damage to each creature except for creatures you control with flying. *"I have calculated that a dragon in flight, in a single strafing run, can cover an area of—" —Thaedus the Clever, last words*"