In the vein of the new “Sorcery Light” features we have been getting, I thought it would be cool if we got some corruption weapon fittings for use by us wanna be sorcerers. The idea here is you attach the sorcery fitting which does some combination of increased damage, armor pen, giving corruption, etc, The downside to balance it being the most powerful fitting is, as long as you have the weapon equipped, you steadily take on corruption yourself. So you are more powerful short term, but you would have to farm up some hearts of the heros, etc to remain more powerful over time.
These mechanics are already in the game, so shouldn’t be a ton of work to add. Mostly sorting out how it would work against thralls, bosses, etc and if put on a weapon held by a thrall of your own.
oops i meant to mention could be armor fittings as well, or in place of.