This spell outlines all creatures within a 40ft radius of the caster in the equivalent of Faerie Fire. The csater can choose to exclude creatures within the AoE at will. Note that this will reveal invisible creatures. Any creature leaving the AoE is no longer affected. Creatures that enter the AoE are affected. One difference from Faerie Fire is that all creatures are outlined in fiery red flames.
This spell gives a +2 to attack rolls in darkness or a +1 in twilight or better versus all highlighted creatures.