Is Benediction of Moons legal in Standard, Modern, and Commander?

Benediction of Moons is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Benediction of Moons

Q: What type of card is Benediction of Moons?

Benediction of Moons is a Sorcery. Its oracle text reads: "You gain 1 life for each player. Haunt (When this spell card is put into a graveyard after resolving, exile it haunting target creature.) When the creature this card haunts dies, you gain 1 life for each player."