Allows Mario to kill enemies simply by running through them. He will still lose a live, however, if he falls into a bottomless pit, runs out of time, or gets stuck in an auto-scrolling level.
Takes Mario to the Warp Zone, where he can get into a new world. Using it in World 1 will allow Mario to warp to World 2, 3, or 4. Using it in Worlds 2-6 will allow him to warp to World 5, 6, or 7. Using it in World 7 or the Warp Zone itself will allow him to warp to World 8.
Makes Mario Raccoon Mario with a constantly-filled meter. The P-wing will last only one level, and then Mario will become regular Raccoon Mario. If he is hit by an enemy, he will become Super Mario.