Flame Deathblade (Slayer) skill

Take up your greatsword in a reverse grip and gather your burning rage. Quickly swing the greatsword upward, unleashing a fiery slash. Before charging is complete, inflict Atk. Power Damage. At the first charge, it inflicts Atk. Power Damage and when overcharged, it inflicts Atk. Power Damage and knocks foes back.