Originally Posted by
Jenny XJ9
You clearly don't know how the trait works. It applies a debuff, anyone that attacks takes a charge and that ability does damage. The 5% of his damage isn't from him using all the charges. All expended charges count towards the damage of the person who applied it, not who utilizes the extra damage.
To answer OP though, it procs so little in PvE that I can't see it really being much of a benefit. I have two of the items at 370 ilvl which adds about 2k damage assuming you go off tooltips. Let's assume for a minute you had 3 of them at 370, that would be 20 stacks for 3k per (before mitigations take place with like armor). 60k free damage generated every let's say minute. That turns to 1k damage per second on the user which compared to stacking some traits is not worth doing. Assume half of them crit, 1500 extra DPS. Maybe if there's like a class that their traits are so awful and they manage to get 3 370 pieces it could be a benefit but I can't see it being useful in the long run.
I'd have to check a bit myself but I could see some goofy m+ gimmick for it if you can proc multiple of the trait with aoes. Highly unlikely but that would be interesting to see.