I think the spell backfired. I went camping over St Patties weekend and fell head first on the fire while black out drunk. I currently have a sizable cut on my face but I don't think it'll scar. I'm not sure if the cut came from headbutting the fire but it would make sense since I burned the spider to death. But I can't recollect any details about what transpired so I can't say for certain, apparently I was also shoved into a ravine, so it may have been from that. According to one of my friends, dark magic is more likely to backfire if the ritual is performed during a waxing moon. But I figured there would be a karmic reaction no matter what.