Self-Breaking Karma Enhancer

“Listen to this spell I weave, take heed in what is told,
For your hatred and unkind deeds will return to thee threefold.
By the rise of the next full Moon a Witch will sit and weep,
For all the sorrow ye have sewn, thee will begin to reap.
It’s not to late to change your ways and break this painful spell,
Replace the hatred in your heart so only love may dwell.
So mote it be.”

Once the person in question has stopped acting and feeling hateful, the spell will break itself.