Here we go, flame jacket on!
Sharingan is copy wheel.
Mangekyou is Caleidoscope.
I believe that it's possible for ALL Mangekyou users to use jutsu's out of a certain Caleidoscope of jutsu's TO A CERTAIN EXTEND, some examples: Tsukiyomi, Amaterasu, Susanoo, Izanami, Izanagi, etc (pretty much...