I've been bouncing back and fourth from guilds about advice for which sets I should aim for, so far I've been told Velidreth monster set and Hundings. I'm currently cp444 and want to get at least 30k dps on my toon to run trials.
Nearly any PVE Stamblade guide will tell you to get a Maelstrom Bow aswell and to try and keep endless/arrow barrage up all the time. It makes a huge difference to your dps. The grind to get one can be will be horrible but it makes a big difference once you do get one, even if it doesnt have the best trait it will still help plus you could always change the trait now (post Clockwork City transmutation)
First of all, Kra'gh is easier to get than Velidreth, and has comparable if not higher dps in sustained fights where you can stay stationary/stacked behind the boss (most trials).
Second, either Hunding's Rage or Night Mother's Gaze are excellent sets for a stamblade. Night Mother's Gaze will add group utility as well, so I'd go for that. Sunderflame applies more pen debuff, but you would have to heavy attack, which is not ideal on a stamblade. Spriggan will be useless in a trial environment, so I would avoid that, unless you have a pile of disposable gold, or plenty of time to farm.
Your secondary set has to be either dropped or overland, my advice would be to farm a bit normal trials and get the minor slayer jewelry and weapons ("Vicious Ophidian" in Craglorn trials or "War Machine" in HoF). Until you get the weapons you can use body pieces, and use Hundings or NMG crafted weapons, but I'd go for the weapons.
In normal trials you only get blue jewelry, but that's fine, the advantages you get are good enough to get you started in vet trials. Once you start vet Craglorn you get gold VO jewelry quite easily.
VO will make vMA much easier, as it's primarily a sustain set, reduces the cost of stamina abilities, give you back stamina when you kill something, it's a great set. Even after the transition to War Machine, I still keep my VO set, and will never consider it a waste of inventory space. That said, War Machine is incredibly powerful on a stamblade (Soul Harvest: cheap ulti).
Once you're good for vMA, farm your bow, and you're good to go. A Maelstrom Bow is your single highest dps increase. It won't make you go from 25 to 40, but it's easily 5 - 6k dps on it's own.
Now, a footnote. In trials you usually have all the good stuff (NMG, Sunderflame, infused crusher, etc) so your penetration is pretty damn high.
If you're solo your base penetration will be much lower, and there's only so many champion points you can waste in piercing. NMG is a good penetration set, but it's also the lowest one. Spriggan gives you much more penetration, but in fights where you can reliably keep it up, my advice is Two-Fanged Snake. TFS is also good for bragging right when you want to do sick dummy parses.
It drops in Sanctum Ophidia, you can farm it in normal, I'd go for body pieces (chest, belt, gloves, pants, shoes), and avoid weapons, so you can keep it up even when you're on the backbar.
Hope this helps.
Edited by Aisle9 on January 22, 2018 2:51PM
Artemis Absinthe - DC magicka nightblade (PC - EU) Gruzosh Barrelsmasher - DC stamina sorcerer (PC - EU) Kew'bacca - AD stamina nightblade (PC - EU) Jebediah Orbrynn - DC magicka templar (PC - EU) Hold-Many-Bags - Mule DK, Promoted to main tank, occasionally stamDD Olaf Proudstache - Mule - No longer with us Now a Stamwarden healer Aglieglie Brazorf - AD magicka sorcerer (PC - EU) Rodolfo Lavandino - DC stamina, greatsword wielding, Jesus beam spamming, Redguard hybrid templar just a stamplar again (PC - EU) Lemmy Raise Master - EP stamina necromancer (PC - EU)
Red CP are variable depending on Trial, usually moving between Spell Shield/Hardy.
Gear Mix one of: NMG, Hunding's Rage, Mechanical Acuity*, Briarheart With one of: War Machine, Vicious Ophidian With one of: Kra'gh, Velidreth, Selene, Stormfist With: Nirnhoned/Precise Maelstrom bow with double damage health poisons
You can also mix Briarheart with NMG/Hunding's.
DW weapons can be dagger/dagger or axe/dagger. Mainhand Nirnhoned with Poison enchant, offhand Infused with Weapon Damage enchant. All max stam enchants on armor, all weapon damage enchants on jewelry, 6 medium 1 heavy for the health bonuses (if Imperial you can probably slide with 7 medium). As a Redguard you have some flexibility but for a Khajiit I would say it's almost required to use 5 x Vicious Ophidian or you won't be able to sustain in raid.
*I know people will poo-poo Mechanical Acuity but it's pretty strong in my tests as long as your rotation is consistent.
*You can also combine War Machine with Vicious Ophidian if your group needs you to run War Machine. It's not totally ideal since there's a redundant 3-piece bonus but you can still pull 65k+ DPS raid buffed with that setup and War Machine is great for your group.
There are some awesome stamblade players out there like Izaki and Fraktahl and Warfire who probably have some good advice, but in case they don't show up here, I'll give you my scrubby perspective.
Bow: Endless Hail, Razor Caltrops, Rearming Trap, Poison Injection, Siphoning Attacks/Mirage. Incapacitating Strike/Flawless Dawnbreaker/Ballista (useful for some fights like first boss vAA, third boss vHoF, last boss vHRC HM, etc.)
On the bow bar use Incap as the ult if you're using Siphoning Attacks, use Dawnbreaker with Mirage (you need an Assassination ability on the back bar for that +10% crit damage passive).
Rotation Pre-fight: Siphoning Attacks, Deadly Cloak, Relentless Focus, potion Standard Bow Bar rotation: LA Endless Hail, LA Trap, LA Caltrops, LA Poison Inject, swap.
When Siphoning Attacks runs out, re-cast it between Caltrops and Poison Inject (so LA Caltrops, LA Siphoning Attacks, LA Poison Inject, swap). That would typically, for me, be at #3 and #7 below. Of course if you are a Redguard Vampire you may not need Siphoning Attacks and you probably won't need the 3 x Heavy Attacks at #8, so adjust accordingly. *Always* try to pop a pot immediately after hitting Incap, you want that +20 ulti to get your Incaps off as often as possible, especially when wearing War Machine.
1. Endless Hail, Rearming Trap, LA Caltrops, LA Poison Inject, swap
2. LA Rending Slashes, LA Incap, LA Spectral Bow, LA Surprise Attack, LA Surprise Attack, swap
3. Standard bow rotation
4. LA Spectral Bow, LA Relentless Focus, HA Rending Slashes, LA Deadly Cloak, LA Surprise Attack, swap
5. Standard bow rotation
6. LA Spectral Bow, LA Incap, LA Surprise Attack, LA Surprise Attack, LA Rending Slashes, LA Spectral Bow, LA Relentless Focus, swap
7. Standard bow rotation
8. HA Rending Slashes, HA Spectral Bow, HA Deadly Cloak, LA Surprise Attack, swap
9. Go to #3 and repeat
10. In execute, get DoTs down and spam LA/Killer's Blade. In solo tests make sure to keep Relentless Focus up but in raid parses or real fights you can let it drop in execute as long as you are getting 100% Combat Prayer.