Could you contribute any thoughts to what's been discussed so far in the Dragon Quest thread? I also would like some help in revamping the verse if you would be interested.
vsbattles.com
Dragon Quest Revival Discussion Thread
Well the Hero never actually defeated it like he did the other bosses he only kept it busy while the NPC you’re with fixed the seal on the pot sealing it away again. Scanning the Ragin Contagion With Eye for trouble adds this statement to its battle entry This toxic pox was created to ensure...

It's not too hard to change the NEP, TD and Acausality rules for this hax. Like I said, no interaction needed, just change the rule and weave and it's done. (Of course, this is not always the case, it can be weaker.)
Btw, what layer(4-D or 5D) does his plot hax work in? I can open a vs thread accordingly.