To all appearances it might as well have been black glass. Kiska thought that if you were to reconstruct the pieces they would form a crystal-like length of about an arm’s span. The priest let the shard fall. ‘This is very bad.’ Jheval snorted, straightening. Kiska asked, ‘What is it?’ ‘A kind of prison. Very ancient. Perhaps from before the shattering of this Realm. It was forged to contain some thing for all eternity. But Chaos has eaten at it, weakened it, and the entity contained within has burst free.’
