X-Men Annual #15 (1991) (High Grade)

Part three of "The Kings of Pain," continued from the New Warriors Annual #1. X-Force and the New Mutants race to Muir Island, the location of the energy's locus, only to be greeted by an upset group of mutants led by Moira herself. That's not the only thing that's messed up: Harness is trying to resurrect Proteus and it will take all mutants together to try and stop this threat from becoming a reality. Story concludes in X-Factor Annual #6.