Magneto – Not A Hero (TPB) (2012)

The X-Men are shaken when Magneto finally goes villain again, caught on video murdering members of an anti-mutant group. Then, fresh from that brutal and public crime, Magneto forms a new Brotherhood of Evil Mutants — and the membership will shock you! But is it Magneto or is something even stranger going on? Collects Magneto: Not A Hero #1-4.