Reversing is more final and more effective than just cleansing, if you actually have an enemy. It teaches the enemy a lesson that he or she truly deserves to learn. Situations vary a lot, but speaking only for myself, the more persistently someone tries to hurt me, the more i want to send back to them exactly what they put on me. And i think that's a pretty common attitude.
it can be said that Reversing spells may be considered to be the conjure equivalent of the old school-yard chant, "I'm rubber, you're glue -- it bounces off me and sticks to you" -- except that the work is deadly serious and instead of the metaphorical image of rubber, we use the actual reality of a shiny mirror that reflects evil intentions back to the one who sent them.
Comes w 1 candle and instructions.