This is a cheat for when you are having a hard time beating a boss or passing a level so i hope you like it...

First of all you must have at least up to 5 lives then you must go to whichever level you need to pass.. Next you must die 5 times like jump in lava or get touched by a villian and lose.. Then once you have done that then you will see a golden block with a leaf on it. This will give you invinsibility and the tail from the kanooki suit? Then you will easily be able to beat any level! :) (Excludes falling or lava)