Is Firespout legal in Standard, Modern, and Commander?

Firespout is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Firespout?

Firespout is a Sorcery. Its oracle text reads: "Firespout deals 3 damage to each creature without flying if {R} was spent to cast this spell and 3 damage to each creature with flying if {G} was spent to cast this spell. (Do both if {R}{G} was spent.)"

Firespout

Sorcery

Firespout deals 3 damage to each creature without flying if was spent to cast this spell and 3 damage to each creature with flying if was spent to cast this spell. (Do both if was spent.)