The Ulcerated Tree Spirit (Stormveil Castle) will appear as soon as you land. If you progress south, you'll find Godwyn's head and the Prince of Death's Pustule Talisman, alongside a bloodstain ...

Can be mixed in the Flask of Wondrous Physick. The Cerulean Hidden Tear is a drop from the Ulcerated Tree Spirit (Mt Gelmir). This Ulcerated Tree Spirit is located under the Minor Erdtree (Mt.