Uncanny X-Men #4 (2015)

Mutantkind is teetering on the brink of extinction once more! While some mutants seek refuge, others are eager to fight for their species' survival. And in the case of the UNCANNY X-MEN, that means taking the fight to those who would hasten mutantkind's decline! But are the X-Men biting off more than they can chew when they try to hunt down the DARK RIDERS on their own turf? Rated T+