The "Ash of War" confers the Keen affinity to a weapon and instills the ability "Quickstep."

Activate the skill to execute a swift maneuver, enabling agile circling around locked-on targets.

This "Ash of War" is applicable to all close-quarters weapons.

Acquire this "Ash of War" by buying it from Bernal for 800 runes in the dilapidated dwelling of the Nimgfu warriors.