Faerie Fire

Duration: Concentration, up to 1 minute.
Each object in a 20-foot cube within range is
outlined in blue, green, or violet light, as is any
creature within the area when cast that fails a
Dex save.
For the duration, affected creatures and objects
shed dim light in a 10-foot radius.
Affected creatures cannot benefit from being
invisible, and attack rolls against those creatures
have advantage if those creatures are visible.