
It can kill Kain,sundering the Pillars,or purify him, allowing the new guardians to be born.And as each guardian is born, so the corresponding pillar would be rebooted. "The Reaver is the key by which, depending which way it is used, can seal or sunder the pillars. Its power could only be temporarily quelled by an artifact known as the Nexus Stone, and it could be enhanced with magical powers by the Balance Emblem and also with Defiance's Reaver enhancements,Kain in his battle against the Elder God,use the purifing energy of the Spirit Reaver to make much more powerful.Daniel Cabuco also said other abilities that the sword has in its forum: As it acted as a vessel for Raziel's soul, it could be used to decouple history, creating paradoxes and new timelines if brought into proximity with Raziel or another version of itself. The Soul Reaver possessed many unique qualities beyond its originally-intended purpose. The sword's passage through time is a complicated one, and its existence has been, and will be, entwined with Raziel's for all infinity within the Nosgoth universe. Much later in Nosgoth's history, when Kain attacked Raziel with the physical blade, it proved unable to devour its younger self, and shattered, releasing Raziel's soul (the Wraith Blade). Hereafter, Raziel's spirit inhabited the blade, and it obtained the ability to devour the souls of those it struck. It could drain its victims' Blood, but was altered when it absorbed the soul of the time-traveling wraith Raziel. The Reaver was originally an enchanted sword, forged by Vorador at the Ancient vampires' behest to destroy their prophesied adversary, the Hylden champion. Legacy of Kain: Soul Reaver, Soul Reaver 2 and Legacy of Kain: Defiance also include the later, spiritual version of the sword - the Wraith Blade - as a weapon. In its physical manifestation, it can be wielded in Blood Omen: Legacy of Kain, Soul Reaver 2, Blood Omen 2 and Legacy of Kain: Defiance. (The sword only can be destroyed,with other version of the same sword,like in the battle between Kain and William the Just).Through most of the series, it is the signature weapon of the vampire Kain, and plays a key role in the games, as both the protagonists' ultimate weapon and a story element.

It is a flamberge-class sword with a broad, undulating serpentine blade,The sword is forged with metal and with the energy of the Pillars of Nosgoth ,making the sword (like the pillars),indestructible.

The Reaver, and, later, the Soul Reaver, is a weapon which has appeared in every title in the Legacy of Kain series.
