Uncanny Treks: New X-Men Vol. 6- “Planet X" (2003, Comic)

Xorn was Magneto all along. Bob and Matt reach Planet X — the volume where Morrison's long game detonates: the gentle healer unmasks as Magneto, New York burns, and Jean Grey dies (again — but this time it sticks for a while). The most controversial twist in modern X-Men, litigated in full. Matt's defending the swerve; Bob called it back in Imperial. Phoenix, ashes, fallout.