Why do I need a rare type of guano, you might ask. Well, for this experiment I want to see what effect two diametrically opposed chemical substances can have on each other, especially when both are combined with an ever-toxic agent to ensure the most... ghastly results.
In the northeastern peaks of Tirisfal Glades lies the Scarlet Monastery. There the crazed disciples of the Scarlet Crusade congregate, both inside and outside the halls. Which you slay matters not, any of them may have the heart I need.
My what an abundance of gore you have brought me, <name>! Your efforts have been most excellent!