Faerie Fire

Each object in a 20-foot cube within range of the spell is outlined in blue, green, or violet light (your choice). Any creature in the area when the spell is cast is also outlined in light if it fails a Dexterity saving throw.

For the duration of the spell, affected objects and creatures shed dim light in a 10-foot radius. Any attack roll against an affected creature or object has advantage if the attacker can see it, and the creature or object can’t benefit from being invisible.