Showing New Mutants, Vol. 1: Return of Legion by Zeb Wells

Collects New Mutants #1-5. When their oldest and most powerful foe returns, the original New Mutants must reunite! Cannonball, Sunspot, Magma, Magik and Dani Moonstar race to the rescue of Karma. But Legion has her right where he wants her: locked inside his schizophrenic mind!