Complex sentence: Rubeus then appears and reveals to Petz that he had actually expected Petz to fail; his goal was not for her to succeed, but to lure the Sailor Senshi out and sacrifice all four sisters to kill them.
Split into simpler sentences: Rubeus then appears and reveals to Petz that he had actually expected Petz to fail. His goal was not for her to succeed, but to lure the Sailor Senshi out and sacrifice all four sisters to kill them.