I am currently doing the co-op campaign with my cousin and we have encountered a problem in areas that there is lots of necrofire
The only way to kill the cursed enemies effected by it is to use the ability bless, tornado or use blessed arrows/flasks to clear the necrofire and to crowd control the cursed enemies when you kill them.
Failure to do this properly results in the cursed enemies reappearing in any remaining cursed fire in the area followed by them then creating more cursed fire
The issue is that besides the ability Tornado, the other methods to clear cursed fire only cover a small area and even Tornado isn't that great due to the fact it has a 10 turn cooldown and it moves around rather sporadically and leaving small areas untouched
My suggestion is to make it so that when you craft blessed arrows/flasks using a source orb, change it so that instead of consuming the orb it can be reused allowing for more arrows/flasks to be made as currently, source orbs are somewhat rare and hard to come by and there is times we have had to leave some areas unfinished and enemies unkilled due to not being able to clear all the necrofire which is somewhat frustrating
This is just a small issue and there could be better methods to fix it, but i personally hope to see something changed in a future patch as we intend to replay the campaign again once we've finished