Complex sentence: With Albert's help, he returns to Harmonia and becomes a bishop and then stirs up trouble as the Masked Bishop, seeking to use the Harmonian army to flush the Runes out and capture them.
Split into simpler sentences: With Albert's help, he returns to Harmonia and becomes a bishop. He then stirs up trouble as the Masked Bishop, seeking to use the Harmonian army to flush the Runes out and capture them.