Sentence him to an eternity of lego stepping, barefoot edition.
In a more serious note, if you're adept at energy manipulation and specifically cleaning it, I'd rip energy from him, it'll lower his overall life quality, maybe he'll get fired, divorced, accidents, etc. Other slowburns if you have the ability and patience would be to instill a minor form of insanity, i think yellow would be a decent color for that, paired with a waning moon ¿ In a strong water or air sign depending on if you want to sabotage his emotional or intellectual state. I'd roll with Fehu (breaks the spirit), jera (self destruction), thurisaz (defense destruction + confusion) or natuhiz (general hardship). If you want the quick and dirty with a slip and fall or something, color red, hag, jera, uruz, thurisaz, when mars is in its home, exalted, or fire sign. And don't forget the moon.