JadeManacles
From Exalted - Unofficial Wiki
Jade Manacles (Artifact 2) These heavy chains, forged of white jade, are some of the most feared tools of the Wyld Hunt. When the heavy collar and manacles are locked onto an Essence user and the white jade spike driven into the earth, that creature’s Essence is effectively “grounded”, flowing into the Earth at a rate of five motes per hour until the creature’s Essence pool is completely empty. So long as the spike remains grounded, the prisoner may not regain Essence in any way, even from attunement to a manse. These chains are rarely used, as the Anathema are far too dangerous to be imprisoned for long, but on occasion one is captured and forced to divulge its secrets before a tribunal of elder Immaculates.