Falsification of history

Falsification of history is an ability which can be accessed via the machine, Infinity, which allows the user to change the course of history.

The Three Emperors of Yliaster are able to harness this power.

Process
When history is about to be falsified, a shockwave is emitted from the sky. Wherever the shockwave passes becomes affected. Changes are made instantly and people's recollection of the previous timeline is erased.

Some people are unaffected. Although they go to the altered timeline, they still have memory of the previous one. The emperors being the ones who cast the falsification are unaffected. The Crimson Dragon protects the Signers, by emitting a protective bubble from their Marks of the Dragon. Team Ragnarok are protected Polar Gods, whose card forms they possess.

Changes made
The first time this ability was seen in the series, though it was unknown how at the time, was after the duel between Lucciano, Leo and Luna. The changes that were made included: After Yusei, Sherry and Bruno gained knowledge of Yliaster through Momentum Express, the emperors decided that it was necessary to make some changes. These included:
 * The disappearance of the mansion Lucciano took Luna to when he showed her his Duel Board, leaving only an empty patch of land.
 * Any memories people had about the time Lucciano spent at Duel Academy were completely erased, seen when Leo questioned Bob.
 * Momentum Express was never built.
 * The emperors are entered in the World Riding Duel Grand Prix as Team New World.
 * Sherry and Mizoguchi's team are not entered in the World Riding Duel Grand Prix.