Double-click to consume.
Double-click to summon a being from the Underworld to revive downed allies for 5 minutes. Flees if its master is downed.
— In-game description
Using the item will summon an untargetable Shadow Mender that will follow the character around for five minutes. When a nearby ally is Downed, the Shadow Mender will automatically move towards the ally and revive them. The Shadow Mender disappears when the user themselves is Downed.
The user is affected with Shadow Mender for 5 minutes, and unable to use the item until after the effect dissipates.