Faerie Fire

Casting Time: 1 action. Comp: V
Range: 60 feet, 20-foot cube
Duration: Up to 1 minute

Each object in a 20-foot cube within range is outlined in colorful light. Any creature in the area when the spell is cast is also outlined in light if it fails a Dexterity saving throw.
Any attack roll against an affected creature or object has advantage if the attack.