Gear Review
Front-barring Kinras's Wrath opens up more potential for downtime so having it active on both bars is better with a 3x Minor Slayer set such as Relequen active as well. 1x Slimecraw and Harpooner's Wading Kilt are a typical pairing for parsing.
Blackrose Bow with Magnum Shot is quite potent on the frontbar with the combination of Master's Bow on the backbar.
Skills Review
A lot of the skills displayed as quite straightforward such as why you passively slot Camouflaged Hunter and the typical Stamblade toolkit skills such as Relentless Focus.
It's recommended to cast Magnum Shot after you apply Incapacitating Strike on Olms.
Refreshing Leeching Strikes and Dark Shade should only occur when Olms is protected as you need to make sure you get as many ticks of Twisting Path, Endless Hail, Magnum Shot and Poison Injection on him as possible while you spam Lethal Arrow.
Ice Comet is only cast at the start of the fight. The tooltip is slightly higher than Shooting Star and remains so due to the lack of Encratis or Engulfing Flames for a Stamina DPS raid composition.
During execute's fire phase (<25% Health) it can be quite difficult or quite risky to stay melee range for your Killer's Blade casts so it may be sometimes necessary for you to actually let go of your Relentless Focus' bow proc while moving on Olms.
Craft
Warfare
Fitness
Champion Points Recommendations
Instead of Wrathful Strikes for parse setups, use Backstabber instead.
Instead of Sustained by Suffering, Celerity is quite nice as channeling Lethal Arrow slows your movement speed and this can be crucial to living during Storm the Heavens phase or in toher scenarios.
Introduction (Update 32, Deadlands)
This setup is specifically intended for usage as a Stamina Nightblade bow and bow DPS spec for the Clockwork City 12-man Trial "Asylum Sanctorium".
Note that it is also quite important to see what the rest of the team is running for such optimal builds to work. (ESOLogs)
Race for this build is Dunmer.
Mundus Stone is The Thief.
Recommended potion to use for this build will be Essence of Heroism. Heroism potions will give you the most Ultimate casts possible with Incapacitating Strike.
Recommended poisons to use on the frontbar for this build will be Damage Health Poison IX.
Recommended food for this build is a bi-stat food (Max Health + Max Stamina) as it's proven to be a bit more consistent in survivability (and enough sustain with Leeching Strikes) over using Mirage with sustain food.