Spell Casting

I'd say research it, black magic isn't really as bedeviled as people make it out to be, (though I don't believe in color magic or three fold law) it's just something that affects will or is dealing with the dead, maybe more idc. But yes, protect yourself, and research your spells better next time (I know it can be annoying). As for casting against somebody, it is a bad habit but you feel powerful, I'd use my best judgement on this, be careful on whether to continue or not. Have fun with your spells, and which ever path you choose I wish you the best.