Magik (Illyana Rasputin) is a teleporting mutant who was sucked into the demonic Limbo dimension as a child (great job babysitting X-Men!). Growing up there as a slave of the demon Belasco, she learnt both good and evil magic. Ultimately creating her Soulsword from... well part of her soul. She also began manifesting more and more metallic armor over her classic New Mutants costume, kind of like the ultimate in over-accessorising.