She is an awesome option for your discarding as well as controlling decks
Also, match your ramp to your curve
Alexander Gregory Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
As long as you play a Princess character during a turn that Cinderella is out, you are able to put any card from your hand, even uninkable cards, into your inkwell and then draw a new card
This one is particularly handy as it combos well with most of our enchantments that screw around with our opponents mana and creatures
You might even say that together, red and white present a color pair less about straight aggro, like Gruul or Rakdos, and less about Control, like Azorious or Orzhov, but, when mastered, one of flow, capable of seizing and setting the tempo