This is a curse meant to be performed against someone who has wronged you.
You will need:
a black candle that you have consecrated (blessed to make it's flame magical). This can easily be done by rubbing it with oil while praying to the spirit of your choice.
a symbol of the person you are cursing. A picture works, as does a drawing, symbol, or something associated with that person like a few strands of hair or a piece of clothing.
something to burn the symbol over. A plate works fine.
Light the candle and meditate upon all the pain this person brought you. Feel just the pain at first. Then feel nothing but the anger this brings you. Say the following curse:
There has been unfairness done to me!
I summon the elements I envoke
them, I conjure them to do my bidding!
The four watchtowers shall lay
their eyes and minds, there shall be fear and guilt and bad blood! There
shall be submission and no pity! I point the threefold law against thee
against thee !
It shall be pointed threefold, a hundred fold is the cost
for my anger and pain
Thee shall be blinded by the fear blinded by the
pain blinded by me, binded by me Cursed by me!
So mote it be!
Begin burning the item used to represent the person. The curse will go into effect when the victim's symbol is burned.