The Mnemoli (sometimes Mnemo-Li) is a Magna-Ge or type of Magna-Ge that only appear during Dragon Breaks, frequently called "un-time" in these contexts. During this time a blue star appears in the sky, marking them as both similar and different to the other Magna-Ge. The Mnemoli have been called both a single entity and a group of entities.
The Mnemoli's association with Dragon Breaks mean that they can be used to perform specific acts during a Dragon Break, which have been implied to be part of how the Selectives split Akatosh from Auri-El.
The Mnemoli are acknowledged by few cultures on Tamriel, with only the Psijic Order giving them much regard; they are noted to be the cause of a pilgrimage to Veloth for them during Dragon Breaks.[OOG 1] However, they may be held in reverence by the Magna-Ge themselves, who potentially consider their state of being outside of time one of "harmony."[OOG 2]