Place a large black candle in a cauldron (or a large black bowl). The candle must extend a few centimeters above the rim. Fill the cauldron to the rim with fresh water, without wetting the wick. An inch or 2 should remain above the water. Breathe deeply, mediate clear your mind and light the candle.
Visualize the suspect’s spell power as residing within the candle’s flame. Sit in quiet contemplation of the candle and visualize the power flowing and growing with the candle flame (yes, the power against you). As the candle burns down, its flame will eventually sputter and go out as it contacts the water. As soon as the flame has been extinguished by the water, the spell will be dispersed. Break your visualization of the spell’s power; see it explode into dust, becoming impotent.
Pour the water into a hole in the ground, a lake or stream. Bury the candle.
It is done.