I have just the right serum in mind. It will deal with the truth in precisely the way the truth should be dealt with. For this concoction I will need several Shadow Panther hearts from the Swamp. I also require the enchanted fungus off of the Mire Lord who resides there. I am sure one as able as you, adventurer, can persuade him to part with some. Now the hard part will be locating a Deepstrider tumor from far-off Desolace. Very rarely the giants there become ill and a tumor forms. Now, off you go!