[Nameless Sword's] Charged Skill, [Vagrant Sword], can unleash multiple additional sword energy attacks at the 2nd charging stage when you are not in combat, have a Qi shield present, as well as within 5 seconds after unleashing the sword energy of [Shadow Step] or the multiple sword energy attacks of Vagrant Sword. You can consume bonus Endurance to increase the sword energy's damage; each Endurance increases damage by 1%, up to 20%. For 5 seconds after the sword energy hits a target, your sword energy deals 5% more damage to the target. Consecutive hits can stack this effect up to 15%. If the target is a non-player unit, while they are Exhausted, each stack of sword energy damage bonus is increased to 8%, up to 24% bonus at three stacks. Firing multiple sword energy attacks triggers the Energy Surge effect: Immediately restores 20 Endurance, and within 5 seconds, you can unleash one multiple sword energy attack without charging. Energy Surge has an initial cooldown of 20 seconds. Each time a sword energy attack hits a boss unit for the first time, this cooldown is reduced by 1 second, up to a max reduction of 8 seconds.