Netherstone
Like his blade, Temuchin obtained the netherstone when he first entered Hell, escaping Caleb Widow. Caleb Widow threw two sphere's of holy water after Temuchin, and though Temuchin will forever bear the scars on his left wing, the startled demon who witnessed Temuchin's abrupt entry will no longer bear anything at all, having been destroyed by the full impact of the holy water. Temuchin retrieved both the Netherstone and his blade from the fallen demon.

The Netherstone allows Temuchin to spy upon others, even outside of Hell, though it is not able to breach the sanctuary of Heaven, nor other holy places. One exception to this is if the netherstone is carried within a holy place, such as a temple. There, other holy places of a similar nature may then be viewed. Due to the extreme distastefulness of this requirement, however, it is not often excercised.