Super Mario Galaxy/Prankster Comet

Prankster Comets are unlocked after you have 12 stars. They make galaxies crazy in different ways depending on the color of the comet. There are 5 different types.

Speedy Comet
These red comets make you complete a level in a certain time. This time depends on the level e.g. Dino Piranha from ../Good Egg Galaxy/. If you are struggling, try using lots of long jumps.

Daredevil Comet
These silver comets give you one life for a level. The challenge is usually to beat the boss, with the exception of Lava Spire Daredevil Run from ../Melty Molten Galaxy/. This can be extremely challenging (take Bouldergeist from ../Ghostly Galaxy/).