It would be an optical illusion but he basically seems to carry some horses in races when they are weary. An illusion is also something that appears to be or looks like something, but is possibly another thing or will not be there at all. Ponzo Illusion - Illusions https://illusionofkundunmuonline35544.59bloggers.com/36229285/detailed-notes-on-illusion-of-kundun-mu-online