Salvation's new trick

[Crystalion]

Did you try to see if it healed without cracking his resists?  If so, you didn't mention whether it worked or not, only that you were unable to get it to heal when you lowered them.

Sorry, I meant to say that.

I didn't try everything I could think off, but, in short, I tried a bunch of stuff with a Fire Golem modded to not regen, where I first damaged him, then threw fire at him.

Never succeeded in healing him. Which, since he seems to be set up in the .txt file to use item_absorb, is what I would expect, given his massively over 100% fire resists, net.