Nahiri - Defuses stone and metal on the molecular level

Deep within the bowels of what had once been the Emeria Skyclave, Nahiri ripped the taint of Phyrexia from her plane.

In theory, it was a straightforward process: remove the metal that had been grafted into the surroundings and leave behind nothing but the original stone. In practice, it was a nightmare. Compleation had fused stone and metal together on a molecular level, and disentangling the two took an excruciating amount of patient, intricate work for every handspan of metal. Fortunately, Nahiri had nothing if not time.

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MARCH OF THE MACHINE: THE AFTERMATH | BEYOND REPAIR