Well... The spell half worked at least. The spell was designed to save a pegasus who's crashing, and the first part worked perfectly. Rainbow Dash dove at the ground at perilous speed, and just as intended she inflated like a big airbag! Her trim athletic figure vanished as she filled with soft clouds with a fwoomph, transformed into a big blue balloon that fell slowly and hit the ground softly

The problem is she was supposed to deflate a few seconds after she came to a stop. It's been a few minutes now, however, and Rainbow Dash is still a big inflated balloon. She glances over at you with a blush

"Aren't I supposed to be deflating by now? What gives?"