In one future reality that some members of the New Mutants accidentally visited, there had been a war between mutants and humans, started by the humans. Mutants won, thanks in part to the alliance Magneto had forged between Xavier’s School and the Hellfire Club. The Lords Cardinal, led by Sunspot and Magma as Chief Arbitrators, built a paradise for mutants in uptown and created a perfect mutant state while the humans left in the slums down below had to fend for themselves. Mutant children were taken away to a better life, and those in disagreement with the Chief Arbitrators had their personalities altered by mutants with mind-altering powers. [New Mutants (1st series) #49-50]
In the Age of Apocalypse, Magma was among the many mutants supporting Apocalypse’s view of survival of the fittest. Because of her powers, she was picked for a rather special assignment, a pre-emptive strike against the Human High Council. Magma interrupted their supposed secret meeting in London by melting her way though the ground, and erupting with a burst of lava. However, before she could seriously injure anybody, Magma was killed by Weapon X, who was working together with the humans.