I have casted a pretty powerful hex and used lots of faith and energy but one day after I cast the hex the energy came back to me(karma) but the hex had no other effect. I have even walked almost 1km while carrying my wand just so I can cast the hex at my victim's house but nothing happened to him, he even got better. Anyone got an idea about what the actual heck happened?
Are you sure your victim knows nothing of spellcraft? There is such a thing as a countercurse after all.
Or maybe he/ she is rather religious making their guardian angel rather potent.
Or your hex interfered with the plans of someone/ something more powerfull than you?