UNCANNY X-MEN (1963) #148

The X-Men still find themselves unwilling vistors of Castle Doom and it will be up to Storm to take a risky endevor in order to escape. While the great, global storm created by Ororo’s imprisoned subconscious rages, the X-Men, imprisoned in Dr. Doom’s castle, pass his various tests and escape from their cells, heading for a rematch. After a brief struggle, Doom agrees to release Storm, thinking to use her distraction to cover his escape. Storm, however, has gathered enough raw power to defeat Doom easily, and in the process has lost touch with her humanity, casing her to attack the X-Men as well.…