And due to my desire to test the weapon in its entirety, I soloed deep marsh (no one else to take damage but me, no stuns). The proc did very little in total to the mobs, mainly because I would get them low health or killed before the proc went off. As for each of the bosses, none of them took much damage from the proc, even the hardest hitting ones. I would compare the damage from one proc hit to that of a good geared rogues aimed shot or great geared mages lightning. Clearly not op in this map.