House of M: Avengers #2

Luke and his Avengers tangle with the Dragons led by Shang-Chi but cannot form alliance with the super group as their philosophies differ. When Frank Castle saves his family from mutants in the park, he is approached by Thunderbird and asked to join the Brotherhood. Misty gets close to her fellow Avengers and is given bullets that can pierce even Cage's skin. During another tussle with the Dragons, the Brotherhood attacks both groups. Tigra is killed by Taskmaster and as Cage mourns his lost love, Thunderbird commands Misty to shoot him. With her alliances wavering, Misty takes the shot.