Invoke a memento of poison, which inflicts Miasma damage all around.
Acquired in Crown of Towers requires Ruego Al Alba and Sarmiento & Centella to obtain. A short puzzle must be completed involving quick swapping of the two weapons.
Lore
Chant inscribed with pen and hemlock in a poisoned royal tome. Every night, the ancient monarch sat in the darkness to inscribe his envy in bile-soaked letters.