Uncanny X-Men Vol 1 #285

The X-Men have been transported to a mysterious, war-torn land. Separated, they must now regroup and escape...if they can!

The gold team is teleported to another dimension where Colossus' brother Mikhail, believed to be dead, has escaped to. Archangel enters a trance and kills a bunch of rebels and is ordained leader of the dimension's established power.

Meanwhile back on Earth 616 Bishop, Malcolm, and Randall are picking off escaped criminals from their time-line left and right.