Is Turn to Slag legal in Standard, Modern, and Commander?

Turn to Slag is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Turn to Slag

Q: What type of card is Turn to Slag?

Turn to Slag is a Sorcery. Its oracle text reads: "Turn to Slag deals 5 damage to target creature. Destroy all Equipment attached to that creature. *"If it wasn't a blackened, stinking, melted abomination before, it certainly is now." —Koth of the Hammer*"