Stone
"So we need to find a way to levitate the troll off the ground, so it cannot regenerate, and then batter it from afar. OK, thats something we can plan for, until then I suggest we just run. My spells won't trap it due to its strength, as it will simply pull through any plants that try and bind it. We need to find a way to work out its weaknesses, either by capturing one, or finding a new site and taking on the growing ones. We have the potential to try out fire and ice on those, and find out what is most effective. Perhaps acid would work. It burns through flesh easily enough when someone spills it, and leaves a nasty scar if not treated magically, perhaps that will work. Or perhaps striking it with a lightning bolt. Not sure how we would call one down on a particular target, but I suspect some casters might be able to do it. Let me think on that one. If it needs the earth to regenerate, perhaps we can drown it in water. If it doesn't need air to breath, we might not be successful, but we probably need to work out how to hurt them before there are too many of them. Another option is targetting the seeds. If it is a particular type or skillset that the goblin needs to allow it to seed a troll, perhaps we can target them instead. Remove the problem before it starts"
All the thinking was starting to give Holly a headache, so she simply added, "Perhaps we could ask around and find out all we can about the tales about trolls. Perhaps the clerics of Pelor have some information, or the wise people of the tribe. Lets go out and ask, then come back and find some links."