Let the animation play all the way through once (forwards), then feel free to watch it like twenty times if you want.
Made in Mandelbulb 3D. Another test using one of the presets. I still haven't even changed the colors in this program yet. I'll try to do that for the next thing I make. I would have shared a version that takes twice as long to go through the animation, but that would require twice as many frames, and I doubt I would have been able to upload them all to Scratch.