Alacrity is literally broken, it does nothing. Drop Violent Tapestry as its pretty much usless except for getting the occasional stacks. Fist over Matter only works if your looking at the target, the slam effect doesnt work on stuff off screen. Its inferior to Ties that Bind for pure mobbing.
The Phasezerker legendary class mod is by far the best if you can get it, it gives you Gun Damage, Cooldown Rate, and an extra 5 stacks. Everytime you use your Action skill it will also give you max stacks (making violent tapestry even more useless. 25 Max (10 From Do Harm, +5 from Phasezerker, +10 from Avatar). It will also gives points into Clarity, Catharsis, and something else I cant remember. What you really want is Clarity for the extra healing. Catharsis is kinda mediocre, you’ll get it from the class mod anyway. Not worth extra points. The extra effects at the bottom are just icing on the cake, they dont really matter much compared to the mod itself.
Max Do Harm or at least put 4 to 5 into it, and max Awakening. I’d drop Personal Space and put 2 into Sustainment (you might have to put some into wildfire to get there, its just to get further down the tree). Sustainment is a great healing skill, and even at 2 points it will heal a LOT once you start using Ties Thaat Bind (you get the healing from every target dmg, you can go from 1 HP to full in just a few shots)
With that that build you’ll be able to spam Ties That Bind constantly, twice every 5 seconds or so, which will automatically give you 25 stacks AND 25 stacks of Do Harm, letting you build it up extremely quickly. Do Harm increases damage through the Linked effect of Ties That Bind, so you’ll often OHKO or completely destroy any linked targets. Combined with Sustained you’ll get LOTS of healing, almost instantly.
And drop Allure, the radius is crap even w/ Transcend. Use Stillness or Mind to completely lock up entire groups of enemies. Indiscriminate and the Ties That Bind link WONT cancel Stillness of Mind, so they’ll be stuck for a much longer duration. Meaning you’ll take more enemies out of the fight, which results in less damage taken overall.
And dont use Infusion as it messes with Sustainment, you can end up doing less dmg w/ out the right weapons, and it will horribly mess up your DoT if you try to use a weapon with the same element as your Action Skill.
Heres the build I use.
https://bl3skills.com/siren#0000000000000053003311321315305021310200
You can swap some points around From Rest / Laid Baire / Wrath depending on what you want. 1 point in From Rest helps w/ a lot of Maliwan weapons, unless your using mostly Maliwan you dont really need more.
You only need 1 into Remnant as it gets almost all of its damage from Overkill, it can do crazy amounts of dmg on occasion, often up to 50k+. Switch Action elements depending on what you need the most.
With that build you’ll be destroying enemies in no time. She can easily do circle of slaughter w/ even halfway decent modifiers. Most enemies will die almost instantly once linked, Remnant can often OHKO enemies, you get the best crowd control in the game through Ties+Stillness, and your healing from Sustainment is through the roof once things are phasegrasped.
For bosses just switch to Phasecast and Soul Sap, or Phaseslam depending on whether or not you’ve got a decent weapon with the Annointed Perks (250% Weapon Dmg after Phasecast, 300% after Phaseslam)
Always cast it twice regardless if you cant hit, as Transcend will stack twice giving you up to 57% Crit Dmg, not to mention the 100% Accuracy bonus.
For Relics you can use whatever, but an Elemental Projector is the best for greatly increasing elemental dmg. You can use some low level grenades to set yourself on Fire or something (and iirc its boosted through Anima so the duration lasts even longer). Its kinda overkill, though.
If you really want to ohko everything you can pre-cast Ties at the floor or wall to build up to 99 Do Harm stacks, or start before you encounter a group of enemies. Again, its unnecessary for 99% of all fights since things will die so fast.
For weapons you want some dexent SMG like the Crossroads (Fire especially), a Cutsman for doing large amounts of dmg (like a corrosive one vs Armored enemies/robots), even the Night Hawkin (at night it destroys when it fires x4 bullets and adds incendiary ammo). Laser Sploder is allso great but I dont think it riccochets, I use an Electric one to strip shields. Brainstormer works extremely well for shock since it riccochets all over the place. Hellwalker, Incendiary Flakker, etc,
You can go w/ whtv shield you want, usually a Transformer or something.
Keep in mind your grtting deminishing returns on cooldown effects, w / Phasezerker and Action Skill cooldown from Guardian rank your already close to it. Just adding more in Restless or from Relics might not give you much (maybe a half a second or less). Find the sweet spot then look for something else. (I only use Phasezerker and guardian ranks, 2-3 points in Restless, and I still get around 5 or 6 seconds.)