This Ash of War grants an armament the Occult affinity and the following skill:

"White Shadow's Lure: Hold armament in a brief, silent prayer to create a white shadow. The apparition lures in foes of human build who are not in combat, drawing their aggression. Effective on demi-humans even if they are already in a combat state."

Usable on all melee armaments.

The ashes are located on the other side of the river northwest of Blessed Snowfield (deep).

After coming here, you can get the battle ashes by killing the invisible dung beetle according to the white mark on the ground.