This Ash of War grants no affinity to an armament, but imparts the following skill:

Ash of War: Palm Blast Location in Palm Blast: Found on the Dryleaf Arts weapon. At the Moorth RuinsGrace Site of Grace, use the May The Best Win emote in front of the DryLeaf Dane Monk, you will then begin a battle and winning will grant you the weapon and it's Ash of War. FP Cost: 14. Deals 20 stance damage when uncharged, and 36 stance damage when fully charged. This Skill is Chargeable. Charged Skill deals significantly more damage and in a wider AoE, also knocking back enemies similarly to Rejection. The AoE is an extension of the weapon itself, meaning it inflicts any status buildup applied to the weapon Charging the attack provides a large amount of poise, similar to Endure.