Mark of the Avaricious Arcane Hunter

"Your prey is chosen, the hunt is on. Covertly mark targets, making you aware of their positions at all times until the marks expire or are dispelled. All damage done to marked targets is increased. Arcane damage has its damage amplified further. The extra arcane damage inflicted while the marks are active will be built up in the form of an arcane charge that you can detonate to release all the stored-up energy. Additional bonus experience earned for slaying a marked target above your level. (This effect remains even if your target dies to the mark detonating or within a short duration of the detonation). Adds a bonus to the damage inflicted, the duration of the marks, the marks’ subtlety, and the number of marks available based on Perception."