I'm just wondering, but is it wrong to think of developing spells and items to weaponize positive energy? To turn the source of healing and life into a symbol of betrayal and pain? To grant wands and devices to villains, so that people can be engulfed in torrents of blinding healing energies until their bodies can no longer contain the energies, their bodies writhing and rippling, swelling up as they become so alive they explode, screaming in a scintillating burst of vital energies?
Or to slip items that remove the limits from healing spells in the area? So that as a healer tries to bring health to their charges, they will watch, as with pain rippling though them, they die, bursting and shrieking?
And all of this, done just to prove a point?