UNCANNY X-MEN (1963) #135

Jean Grey has become the Dark Phoenix, a corruption of the cosmic entity bonded to Jean. Now the Dark Phoenix seeks to destroy everything in its path! What can the X-Men do to defeat it? Must they kill Jean Grey? The Dark Phoenix explodes the Blackbird, sending the X-Men to the ground. They all manage to fell safety only to be attacked and easily defeated by Dark Phoenix.…