A magic spell

A spell to protect you from an evil person:

Find a weed growing in your yard.

Name the weed after the evil person.

Each night, under the cover of darkness, pee on the weed, and envision your enemy being doused with poison and absorbing into their skin, and withering away. Taunt the weed as if it were your enemy.

Do this each night until the weed dies.

Now check in on your enemy. Bet they won't be doing so hot.