Rain Dance

The coolest and most unique spell is in the craziest world, Cloud Cuckooland. There are two skulls, one blue and one red. One contains the boss, Mingy Jongo, while the other contains Mumbo. Mingy Jongo's skull is random, so you'll never know. The rain dance spell (the Mumbo Pad is on the same ledge where you'll participate in the footrace) will create a rainbow letting you reach the Pot o' Gold and also create two beanstalks, assuming you planted the beans. These allow Banjo to access the cheese wedge and the sack race.