Complex sentence: In 2009, Scott Bronner (MercyKill, and Legion) joined the band, replacing Scott Wilson, and Mike Morgan (Summon The Destroyer, Christ Beheaded) replaced Ben Parrish.
Split into simpler sentences: In 2009, Scott Bronner (MercyKill, and Legion) joined the band, replacing Scott Wilson. And Mike Morgan (Summon The Destroyer, Christ Beheaded) replaced Ben Parrish.