Dragonspike is a poison inevitably fatal to mages, its effects being stronger the more magical power they possess. It slows the breathing and destroys the nerves before finally stopping the heart. The drug, however, has no effect whatsoever on those without magic, nor does it impair the taste of any food or drink laced with it.[1a]
The poison itself can only be found in the forbidden jungles of Lustria. It was also used to kill the previous Everqueen of Ulthuan, Alarielle's mother.[1a]