A malformed vertebra found by the mad, with a queer symbol on its inside, proof of the shackles of the Gods. Equip to pledge oneself to the Mound-makers covenant.
The mound-makers wish only to add to their mounds, becoming mad spirits whether summoned as co-operators or invaders.
They are blithe to those around them, for in their minds, any kill might lead to another shackle.
Used to join the Mound-Makers covenant