Complex sentence: In the Belgariad he mainly uses "spontaneous sorcery" meaning he does it without consciously gathering and releasing his will-the Prophecy also acts through him on many occasions when he is incapable of protecting himself.
Split into simpler sentences: In the Belgariad he mainly uses "spontaneous sorcery" meaning he does it without consciously gathering and releasing his will. The Prophecy also acts through him on many occasions when he is incapable of protecting himself.