The Uncanny X-Men

The X-Men storm a French monastery where Cortez's Acolytes hold Moira MacTaggert captive, fighting through a dead zone that blocks Cerebro. Inside, Moira plants seeds of doubt in young Neophyte about Cortez killing Magneto, leading to a climactic battle where Wolverine delivers the killing blow to Cortez and Xavier discovers the first evidence of the Legacy Virus