I am not the creator of this video. This is a mirror of the original video by ToxicThunderCloud, which is currently unavailable. Submitted on April 17, 2014.
http://youtube.com/watch?v=9V-fLfEvz1Q
WebM: https://derpibooru.org/2311368
https://mega.nz/folder/CO5xDSRD#6MgQs5-1y1yedr7UMsqE8g


Original description:
Traveling across the space time dimension thing, Rainbow finds herself with an obstacle in her path. She has no choice but to destroy it.