Prankster Comet

After World 8 is beaten, comets from Greater Galaxy will fall and take supernatural effects on the game.

Types of Comets
Red Comets = Mario, Luigi or Toad must complete the stage in "Small" form if they try to take any other form into the level they will still be in small form after entering. Interestingly, They'll get their back power up if they lose the level, but not if they win it. Goal Poles are replaced by Treasure Chests.

Violet Comets = Mario, Luigi or Toad start out in the main area of the the level (even if they don't usually start there), they must collect violet coins to beat the level. All Warp Pipes are blocked.