Complex sentence: Savage attempts to rewrite history with a temporal explosion, but is killed by the team as the meteor he used for it rendered him mortal; with Savage dead, Hawkman and Hawkgirl leave the team.
Split into simpler sentences: Savage attempts to rewrite history with a temporal explosion, but is killed by the team when he is rendered mortal by the same meteor he used for his scheme. With Savage dead, Hawkman and Hawkgirl leave the team.