[Kameron8]

The issue I have with maximum HP percentages is boss enemies. That 25% HP could be quite a lot for them. That said, they could be made immune.

My thoughts;

A) Enma's could just be changed to general damage instead of targeting specific enemies within an HP range.
B) It could additionally scale on your Dark ATK.
C) It could inflict Immobilize on people who survive for a short duration, maybe.
C2) Or you could absorb a portion of the damage dealt.
C3) Or it could extend the duration of active Hexer field effects (like Spirit Pain, etc.) if it defeats an enemy.

Don't really like the idea of a percentage based execute or removing people from the battle, though.

I'm personally fond of the conditional HP portion of the spell -- the idea, not the 100 health value used -- and wouldn't want to see it removed, but unless a crippling status like immobilize gets tacked onto Enma's I think bumping it to scale better is a good way to handle it. My initial thoughts on the proposals are:

A) Removes what makes the spell interesting, slotting it to compete with Wretched Oil.
B) Most likely to work, but the static 100 damage might have to be modernized to Scaled Weapon Attack as well.
C) If the conditional 100 HP remains, it's too late for a status to impact the fight with 9m costs.
C2) Good potential in this realm of thinking, but still wouldn't heal for much unless the damage was also changed. (Could be combined with A)
C3) Given how difficult it is to defeat things with Enma's, it would still be in its rut.