Complex sentence: The series began airing on October 7,1998, and finished on May 21,2006, and was also the last to feature the original Charmed Ones, Prue, Piper, and Phoebe.
Split into simpler sentences: The series began airing on October 7,1998, and finished on May 21,2006. This was also the last season to feature the original Charmed Ones, Prue, Piper, and Phoebe.