Missing Mushrooms, a level about using mushrooms to progress

Level Title: Missing Mushrooms

ID: C404-0000-0040-AC65

Description of Gameplay Elements: A level that uses mushrooms as a sort of "key". Features 3 challenges, 3 hidden 1-up mushrooms, a very useful, but hidden, starman, and an optional mystery mushroom

Images / Video: http://imgur.com/9gEqFgh