From the opposite side, Solus cast a stream of restorative energy that kept Lith's side of Dismantle from damaging the power core, mana pathways, and mana circulatory system of Double Edge.
He used the darkness element to find and purge the mana coursing through the artifact from his own energy signature while also cutting off the supply of new mana to the blade.
The darkness element coated the blade inside out, clogging the mana pathways and interrupting the natural flow of energy from the owner to the power core. Once the energy signature disappeared, it took Double Edge a few seconds to interpret is as the "death" of its master and losing the imprint.
The task at hand was difficult and Lith had to use Domination multiple times to make sure to not have left enough mana to recover the imprint the moment the darkness element faded away.