"Clan Mors"
A crossed series of arrows pointing in all directions incorporating a skaven "S" runic symbol. This is the mark of Clan Moors (pronounced "xmors"). This symbol was first found in the vicinity of the City of Pillars, and has come into wide usage to represent the letter "x". The symbol suggests an alliance between the Skaven and the minions of Chaos, and ill tidings for all others. See Skaven army book, page 9.