Darkness Mushroom

This rare mushroom oozes out a small amount of a black inky substance. Some say that the mushrooms are reincarnations of terrible people and their deeds are so foul that even in their new life they exude nothing but pure darkness.
The mushroom itself may be used as an ingredient and the ooze may be used as well
Eating this mushroom causes the skin on your body to droop and sag almost like the black ink, this can be cancelled with restoration spells
Injecting the black inky substance directly into the blood stream causes the eye to exude a black blood like substance, while also allowing the user to see their current location as if they were in the etheral plane

Uses:
Potion of Transparency Ink Locations: Forests, Near places of mass death