Dark Soul

The Dark Soul is a common consumable sometimes found when killing an enemy while wearing the mask of bone. Upon use, it will improves vision in darkness for 10 minutes.

Effect
Improves vision in darkness (10 minutes)

Source

 * Mask of Bone

Trivia

 * This soul, like the others, has an uncommon version called "Strong Dark Soul". However, it doesn't seem to have additional properties.