If SCH got Energy Drain back, why not do the same for WHMs?

[Hereon]

I like the idea, however to not make it bonkers as all heck, using a lily that way should not build up the blood lily. Otherwise it would be massively overpowered.
And in terms of potency it would need to be at least 225, since that is the effective potency you build up by using a heal lily in terms of building towards misery.
I'd suggest it should be around 230-240 potency so you have a gain over spending it on healing. Since, even if i overheal with it, id choose the heal lily over a dmg lily if they have the same potency. 225 pot dmg + 1hp heal is still better than just 225 pot dmg.