But I haven't gotten a single increase from casting the spell. Not one. And I've spent several hours on that spell alone. It seems like something odd is going on.

I'm willing to accept if it's RNG.. but it seems a little unlikely after spending a few days trying for hours at a time with no results. Especially when I've switched over to other spells (grease, for example) with lower affinity and didn't have any major issues, on the same mobs.

When you have the time, could you check and make sure everything's working ok?

Either way, thanks for the help.