i choose Casey the conductor because it fits her character, this map is like a train track an also the fact we already have a Casey the train driver like @Elsa said i agree it suits her
the party booster i don’t like much at the end it does lower ur score a little but it’s ok when u use it ....but i love the color blaster ball thing cause u can mix 2 of them a clear a board when u create them or use them in game use as well...an u can take out majority of the colors u want out