That's.... all kind of awesome. However, I have one rules suggestion. As I see the Divine Worm's attraction to suckle, it seems like it would assault your drives/senses in multiple ways. The saving throw wouldn't always be poison, but randomly poison, charm or fear (system depending.) Changing the save would make the Divine Worm more mysterious and harder to prepare for and defeat.
I made it a Poison save because of all the pheromones it's sweating out, but I think randomising the save is a fantastic idea and Greg should update it immediately.Unless that doesn't sit with Lab Lord which I don't know because I've never read its rules, but charm/fear could be lumped into a Magic save I guess.
Rather than altering Logan's work, Red's ideas will be appended to the entry under the title "REDBEARD'S EDIT." I will change the text somewhat to reflect LL/AEC and ACKS rules.