All he does is draw you cards
Chittering Witchs value craters outside of Commander since you dont get three tokens, but I love it within Commander to handle small creatures
By sacrificing your own board with it on the stack, and by pre-emptying your opponents yards with anything from a Soul-Guide Lantern to an Author of Shadows, you can simultaneously wipe the board, get a load of EtBs, and slingshot into the lead
But, I did come away with a better sense of the diversity in the three styles of the format
Its Flower Selecting ability allows you to draw two cards and place one into the Lost Zone
Shine Dust You can convert duplicate cards in your collection into "Shine Dust." This allows you to add custom animations or flares to individual cards, such as shiny stars or Poke Balls