UNCANNY X-MEN (1963) #176

At the mansion, the X-Men throw down with Dark Phoenix! Plus, an X-marriage! The X-Men are on a training exercise outside when they see the Phoenix effect, followed by a man falling from the sky. It turns out to be Cyclops, who tells them that Dark Phoenix is back. Professor X has his doubts, but when he tries to use Cerebro to find Phoenix, he is almost electrocuted. As the X-Men puzzle about what happens, Cyclops collapses, only to have Dark Phoenix emerge from him and briefly fight the X-Men.…