Complex sentence: In the second season, the Jewel Riders receive more powers and new costumes; a new villain, Morgana, is also introduced in addition to Kale, as is a new set of magical jewels to find.
Split into simpler sentences: In the second season, the Jewel Riders receive more powers and new costumes. A new villain, Morgana, is introduced in addition to Kale, as is a new set of magical jewels to find.