Increases the DMG Reduction of Stormbreaker Spear's Martial Arts Skill by 25% after taunting a boss unit, and by 5% after taunting a non-boss unit, up to 25% in total. While the DMG Reduction is active, all damage dealt is reduced by 10%. The cooldown of Martial Arts Skill is reduced by 4 seconds. Attacking a taunted unit increases damage by 5%. While DMG Reduction is active, hitting a target recovers HP based on the Battle Will consumed by that skill (2% HP per bar of Battle Will consumed; this effect only triggers once when a single skill hits the same target multiple times, and can only trigger on up to five targets).