Revision Blade

The Revision Blade is an immensely powerful weapon of Akashic origin owned by the Wanderer.

Description
The Revision Blade is a two-metre-long sword with a white hilt whose blade is formed entirely of blue Akashic energy. Symbols of every language that is, was, or ever will be can be seen shifting along its length, representing Akasha's infinity. The edge of the sword that faces its wielder is dulled and plated with metal so that she can safely grasp it to push the blade towards an opponent if her other hand is in an improper position. As a blade fuelled by the energy of Akasha itself, the Revision Blade can cut through almost anything with ease, though the Lance of Taenarus was able to withstand a few of its blows due to the fact that it had originated from the Fruit of Life.

Whenever anyone who has stolen knowledge from the Knowledge Dimension is killed by the Revision Blade, any actions that they have taken to change a universe's history as a result of the knowledge they have stolen will be reverted, with the timeline of the universe in question being rewound to a point in history shortly before the first changes took place. However, the Revision Blade can only achieve complete temporal revision if the killed offender is in the same timeline that they have altered at the time of their death (such as DU Sefer in the Dark Universe (Sefer Timeline)). It was implied that, if a canon thief was killed with the Revision Blade in a different universe or timeline than the one they had used stolen knowledge to alter, they would simply die and the Revision Blade would be unable to reverse their actions, necessitating the Wanderer to use other means of achieving her mission.

History
In 7108 ADP of the Dark Universe (Sefer Timeline), the Wanderer materialized the Revision Blade while Dusefer summoned the Lance of Taenarus in preparation for their duel on Tybionus Prime. Dusefer was aware of the Revision Blade and its abilities because she had previously read about it in the Annals of the Wanderer, whereas the Wanderer had read about the Lance of Taenarus in the Knowledge Dimension while researching the new timeline Dusefer had created. Dusefer struck quickly and furiously, forcing the Wanderer to use the Revision Blade to block her frenetic attacks, until the force of them sent the Wanderer flying out of the Divine Providence and into the skies of Tybionus Prime. Dusefer continued to attack from a distance by using the Lance of Taenarus's ability to extend its reach far beyond that of its physical form until the force of one of her swings slammed the Wanderer into a nearby skyscraper, at which point Dusefer teleported to the Wanderer so that they could continue their duel in person.

As the battle progressed, the two women were soon forced to encase themselves in protective forcefields to shield themselves from the debris that began to rain down on them as a result of the damage they were causing to the surrounding building. While Dusefer's forcefield was telekinetic, which required a fair degree of concentration to maintain, the Wanderer's was Akashic, affording her an advantage. By slamming her Akashic forcefield into Dusefer's telekinetic forcefield and disrupting her concentration, the Wanderer distracted her enemy long enough to strike a lethal blow, embedding the Revision Blade in Dusefer's chest. As Dusefer swore revenge and died, the Revision Blade unravelled the timeline of the Dark Universe, undoing Dusefer's actions and restoring the Dark Universe to how it had been before her intervention.