Yeah, Discord treats us well. So much better than all my other pimps. 

Personally, I like the idea of Henry's power. Discord has a point on it being hard for the government to deal with if permanent. How would they even move him to TEF-149 like that? But if he had a transformation, or if he slowly mutated and progressed into that form throughout the story, it'd work a bit better. As for that eldritch stuff, I never even noticed that.

On the subject of character lethality, Drei could technically kill everyone in the same room as him. That said, he'd currently end up killing himself as well due to the fact that he'd be just as affected by whichever toxin he chose to produce. And to be able to produce enough to kill multiple people, it'd have to be something slow acting to ensure he didn't die right at the lethal dose for one person. Or he could opt for a powerful explosive. But he doesn't wanna die just yet.