Reaving is the ritual of reducing the Bloodcount associated with a particular Bloodname. Originally established to mitigate the impact of a poorly performing Bloodname, over time the Reaving has become a political tool used to control the number of warriors from a single Bloodname House, and therefore votes, in Clan Councils. A Reaving is called by a Bloodname House (rather than a Clan) against a Bloodname House that has announced a Trial of Bloodright. The Grand Council debates the merits of the Bloodname, and the mater is traditionally resolved by a Trial of Refusal, known as a Trial of Reaving, based on the results of the Council vote. If the pro-Reaving force wins the trial, the targeted Bloodname's Bloodcount is reduced by one and the Trial of Bloodright is canceled. If the defending force wins, the Trial of Bloodright takes place as scheduled and the Bloodname House that called for the Reaving suffers sanctions.

a scrambling of the spirit properties of the victim