Is Radiant Essence legal in Standard, Modern, and Commander?

Radiant Essence is legal in: Legacy, Vintage, Commander.

What type of card is Radiant Essence?

Radiant Essence is a Creature — Spirit. Its oracle text reads: "Radiant Essence gets +1/+2 as long as an opponent controls a black permanent."

Creature — Spirit

Radiant Essence gets +1/+2 as long as an opponent controls a black permanent.

Set Mirage

Rarity Uncommon

Artist Jennifer Law

Creature Commander Legacy Vintage