This technique was first activated involuntarily to send Echo back in time during The Watchers event. Somehow after this first mysterious use, Echo was able to retain this ability. This technique takes the form of a temporal vortex that swallows Echo, or his target, in a very similar fashion to Kamui — another Mangekyō-based space-time ninjutsu. It is presumed that he can warp to other times as well, but he has yet to discover this to be true.
When Ryun Uchiha preformed this ability with Echo's chakra, he demonstrated the ability to send objects of his choosing both forward and backwards through time — a feature Echo had not displayed while alive. By possessing Echo's chakra, he was able to use it through both his Mangekyō Sharingan and his Rinnegan despite not possessing a Teiōgan.