These are no longer useful, as of patch 4.0.3. A Scourgestone is an item given to all Scourge upon birth or creation. It provides certain benefits to the holder, but more importantly it allows Scourge leaders visibility into the location and movement of all of their units. The Argent Dawn needs them so that paladins can turn the scourgestones into "mightstones". (APG #?) Young members collect "scourgestones" to show their mettle. (DF 126)