Although the tunnels beneath the Mountains of Mourn are dangerous, many Gnoblars risk them in order to search for Thiefstones. Strangely enchanted rocks, Thiefstones attract magical power, and with a brief pass of a Thiefstone over a corpse, any item of any importance will quickly stick to the stone. It is common practice for Ogres who notice Gnoblars with Thiefstones to relieve them of their heavy burden. An Ogre might dangle a Thiefstone around his neck on a chain or rope or tie one to his weapon shaft, for you never know when such an item will come in handy.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
Gnoblar ThiefstoneURL Copied!
A Gnoblar Thiefstone grants the bearer Magic Resistance (1). In addition, roll on the following table when the model is deployed to see if the Thiefstone has helped them to 'find' any useful items. Note that this may result in the bearer of the Thiefstone having two or more Talismans. In addition, if a character is killed in close combat while being in base contact with the model wearing the Thiefstone, you will automatically be allowed to pick up any one Magic Item (except Magic Standards) that the slain character might have had, as long as the bearer does not already have a magic item of that type. The model with the Thiefstone may then use that item itself for the rest of the battle.