Healing spells used in the right places in the right ways could be interesting, if you take a little creative liberty with the use of the spell. ;) Sort of like what i_paint_the_sky was talking about.

If you were getting kinky, also, you could combine a spell with, say, bindings or blades or whatever kink you're writing of. Painsluts, or bondage, or whatnot. I'd use elemental ones, if it were me, but there's other combinations depending on how hardcore or softcore you want to go.