Airball:

"Now you're really in trouble" said the Evil Wizard. "I've warned you about trespassing in my mansion. Now, since you did not take heed of my warnings, I'm turning you into a ball of air and sending you deep into my mansion of over 250 rooms, to search for my spellbook that may give you clues on how to transform yourself into a human again. It will not be a simple task, for you, as the ball of air, have a slow leak, and you'll need to jump on the air pump in some rooms to stay inflated. Take heed, for if you pump up too much you will burst! If you are lucky enough to find the spellbook in these rooms, you'll next have to pick up the objects I've left such as: crosses, tins of beans, a Buddha, a dragon statue, a pumpkin, a flask and even crates that you'll need to get over treacherous obstacles! This is your one chance of survival", he cackles. 

"Sounds easy," you laughingly boast to the evil wizard. "Oh! Does it now!" He sneeres. "Well I'm also putting spikes in these rooms that will take your breath away, as well as killer pads on the floor. You have no chance for success...Hee! Hee!"