Tears of the Dead Potion

Ever heard of the 'Tears of the Dead'?
No? Well pipe down as that's what were to be looking for. You don't want to be grabbin' the wrong plant in this place. Tis a white flower with a handful of pedals shaped like a bunch of tears. It don't grow all that high off the ground and you know you found it if it be growing out the skull of something. That's why they call them 'Tears of the Dead". Cause you'll likely see some pouring out the eye sockets of some poor sap that died long ago. Even the 'nice' plants'll eat your brains.
That's what we're hired to find. Now let's get going and stay close. Or next time someone comes out they'll be pulling flowers from our skulls.
-Mercenary Captain prior to a trip into the wastes.

Access & Availability

The flower is only known to grow above the remains of a corpse (specifically the skull) out in the wastes past The Barrier Mountains. Commonly found near the dangerous ruins of Geht and uncommonly found out in the surrounding even more dangerous wilds.

Complexity

The trick to brewing the flower into a medicine are actually simple but goes against established methods of distilling medicines. Which is why it was widely thought to be useless prior to its discovery. Rather than dissolving the leaves into a liquid via acid to then distill, one simply boils the leaves during the distillation process. The belief is that which ever compound that eventually becomes the active ingredient is damaged by the acid but remains intact and then released if simply boiled.

Discovery

By accident actually. At some point during the founding of Geht and its subsequent downfall, an unnamed apothecary, while trying to brew a cure to a new disease used the leaves of a local flower that was thought to be useless. The flower when distilled properly actually creates a powerful medication that is useful as both an antidote to many poisons and a cure to many diseases.