New X-Men by Grant Morrison v01 - E Is For Extinction (2000)

Collects New X-Men (2001-2004) #114-117 & New X-Men Annual #1. Cassandra Nova has murdered 16 million mutants. Now she has her sights set on The X-Men! Xavier and his team of mutants have long dreamed of a time of peace. But the time for dreaming is over. Now it is time to fight.