their newly manifested diamond forms before casting the entity out of her body. However, it refuses to depart the area, to which Celeste reacts by reabsorbing the force into her own and her two remaining sisters' diamond hearts. Unlike their mother's diamond composition, the Cuckoo's hearts haven't a single flaw, and as such, nothing can destroy, enter, or escape them, even the splintered Phoenix itself. The price the sisters must pay for this is that they can never again feel emotion, thus leaving them even more cold-hearted and detached from their fellow man than they were before. The storyline ends with Emma sitting alone outside of the X-Mansion, staring into the night sky and promising retribution to the Phoenix Entity for exterminating her cloned progeny should it ever return to Earth. Collected editions The series has been collected into a hardcover volume in July 2007 () and a softcover in January 2008 (). Notes References 2006 comics debuts Comics by Greg Pak