Complex sentence: As soon as they were born, they were left on the brimstone plains to die but against all odds they survived as scavengers, as things lower than the lowest beast of the Pit, until they were found by Azazel during one of his raids on Hell.
Split into simpler sentences: As soon as they were born, they were left on the brimstone plains to die. Against all odds, they survived as scavengers, as things lower than the lowest beast of the Pit until they were found by Azazel during one of his raids on Hell.