Complex sentence: In the animated series, the Heart remains distinct from its owner, and each world had a heart of its own; some of which are jewels like the Heart of Kandrakar, and others of which are people with tremendous magical power.
Split into simpler sentences: In the animated series, the Heart remains distinct from its owner, and each world had a Heart of its own. Some of which are jewels like the Heart of Kandrakar, and others of which are people with tremendous magical power.