Rainbow Dash gets her hooves on something very magical, very powerful, and very dangerous. Specifically, she finds Trixie's magic bit, and the very first thing she does is take it out to test its body-morphing powers with her friends.

A simple afternoon delight in a forest clearing becomes something more when Applejack stumbles upon the scene.

Based on "Best Ride Ever," with permission from the author. Thanks to Jondor, Tchernoborg, and O for their input, and thanks to TittySparkles and Stereo_Sub for prereading.