Jerry153
Hey author, I have a few spell ideas I would like to share that I think would do well in this. My first idea would be to modify the Diffindo spell to be molecular in size and work similar to Naruto’s rasenshuriken however it would attack a cells telemere. And an idea I was inspired by Severus studying healing is that he could create a magical cancer type curse that uses healing magic as a base so that if they go to St. Mungos for treatment and any healing spells used would only speed up the advancement of the cancerous curse.