Uncanny Inhumans (2015) #20

INHUMANS VS. X-MEN TIE-IN! Maximus the Mad has recreated the recipe for Terrigen Crystals, and can end the mutant-Inhuman war with a single stroke. He can finally be a hero! Or maybe he won't do anything like that at all. Everything changes for the Inhumans as Charles Soule brings his landmark three-year run on Inhumans titles to an end with this extra-sized story.