- "I believe that the Deadwood furbolg may be gathering these elements from the elementals living in the Irontree Woods . . ." — Donova Snowden [TCG src]
I've studied the sample you returned with, and while I can't say for sure, I believe it contains traces of toxic elements. However, the only way to know for sure is to gather some as a comparison.
I believe that the Deadwood furbolg may be gathering these elements from other corrupted creatures in Felwood; in particular, the elementals living in the Irontree Woods, called toxic horrors.
Collect a few samples for me to compare, but be careful—it's very dangerous there!
I think we are beginning to uncover what is happening here, <name>.
I have to compare this to the substance you found in the cauldron, and then I'm sure we'll know more.
Upon completion of this quest you will gain: