Guild Wars 2

Pure AoE: staff with greater marks trait and ground targeted wells for all utilities, with plague or lich as elite.

If you apply conditions to foes (bleed, poison, chill, etc.) as a primary source of damage, then you want to increase condition damage as much as possible. It increases the damage per tick of each condition, increasing the total damage over its duration.

I’ve encountered the same thing! I thought it was broken at first, because it seems like a completely useless minor trait. I sincerely hope it gets changed.