I know at first the title sounds bad, but listen. What if we could use a shadow dispel, but we take backlash, or we lose some of our max health from using it. For example: We have 5000 health at first, but we use a shadow dispel and our permanent max health for the entire duel (even if they flee and come back) is down to 4500 health or even 4000 health. This would not work against shadow enhanced spells.