Complex sentence: At the Pillars Kain finds the ghost of Ariel, the former Guardian of the Pillar of Balance, who states the human guardians of the Pillars have become corrupted, which in turn corrupts the Pillars.
Split into simpler sentences: At the Pillars Kain finds the ghost of Ariel, the former Guardian of the Pillar of Balance. Ariel states the human guardians of the Pillars have become corrupted, which in turn corrupts the Pillars.