Complex sentence: After overcoming their addiction, Leela and Amy have one more match in the Butterfly Derby against the reigning champs, and to add to the excitement, the match is held over a pit of lava.
Split into simpler sentences: After overcoming their addiction, Leela and Amy have one more match in the Butterfly Derby against the reigning champs. To add to the excitement, the match is held over a pit of lava.