Re: Looking for playability criticisms
Not actually a criticism, but a query toward the whole regen/resurrection thing. Would a Suppress (a chemical agent for plot purposes, being as he is plant life, source of powers and so forth) against his regen not work to counter that? Sulfuria, tired of igniting him and then having him slither out of a swamp, uses her espionage skills to steal a super strong plant suppressant and spray him with it, noting as she does that now he is vulnerable to death? Or is that a little too cliche?
I play (or did play, at this point) in a supers game with a regenerating character with fire issues. How much would it compromise the character here to have reduced regen vs. Fire? Don't know how you could model it in 6th (don't have the books right now) but that makes Sulfuria a lot more threatening. And if I read your objections right Balabanto, would solve most of your problems with a non-threatening nemesis and an invincible character.
Merely my own thoughts on the matter. I know my character got a lot more careful after spending a few weeks slowly healing his burns, despite being able to romp through a wall of tiny demons who struggled to make a lasting mark.