Complex sentence: Sam's bodiless essence was projected by the gods into the ionosphere after his capture in the battle of Keenset; the last time the gods killed his body, Sam returned and stole a new one from one of the lesser gods.
Split into simpler sentences: Sam's bodiless essence was projected by the gods into the ionosphere after his capture in the battle of Keenset. This mode of execution was used because the last time the gods killed his body, Sam returned and stole a new one from one of the lesser gods.