For, what I can only assume were "flavor reasons", when the Pokemon Company first released Dark Pokemon, they omitted the Grass Starters in their respective Generation's introductory sets
Kefka sends damage and free spells flying and just needs protection spells for your opponent's turn when they try to off this crazy wizard
CCC Emerald Break 30 This attack does 30 damage times the number of your Benched Pokmon
Additionally, Cinderella, Melody Weaver, has the Beautiful Voice ability - which gives any of the players other characters with the princess trait a plus one to their lore gathering ability whenever Cinderella, Melody Weaver, sings a song - thereby giving players even more of an incentive to use this character to sing songs for free
While Ruby singers have remained a fringe strategy in competitive events, Powerline has appeared in Set Championships, and that drove a little extra demand for the Enchanted version of the movies most memorable song
You just cant over-rate replacement effects and card selection, especially on a body thats easy to cheat into play and tricky to remove
