Hear me out. A magic type that does hefty damage in short ranges but requires sacrificing a bit of your health.
As an example, lets say we have a spell called "razor". Sacrifices something like 5-10hp and does a quick slash in front of you. Not entirely sure if it should have a DoT effect like bleeding or not. (Totally not inspired off of RoR's Bandit)
Little idea I thought was cool. Sorta like voodoo but instead of healing yourself or healing others, you deal lots of damage at the expense of hurting yourself a bit.