Uncanny X-Force Vol. 4: Dark Angel Saga Book 2

Collects Uncanny X-Force #14-19. The Age of Archangel! X-Force has returned from the twisted Age of Apocalypse with their only hope to prevent their friend Angel from transforming into the monstrous Archangel, heir to Apocalypse. But X-Force is too late: Archangel has already ascended -- and he stands poised to succeed where Apocalyspe failed.