Is the "freeze spell" bad?

I have read about this spell in which you use a ice cube tray and place 12 little pieces of paper that have the names of people or situations that you don't want in your life. I simply do not want nasty rumors about me, depression, financial problems and this one certain person in my life. I do not want to harm that person but if I do this spell will KARMA bite me in the ***?? Please help! Thanks :)