And why it doesn't work well. I've seen a lot of threads talking about Stranglers lately and people remarking how it's not exactly fair that no stamina equivalent was granted; these are usually met with "Well you can always use pelinals." Well... not exactly.

Due to the way Pelinals works it raises and equates only the highest of the two stats; so Pelinals won't work very well to make Thrassian a good stam-build item because of that fact. I've included some screenshots with some gear just to give an idea of how this all works, I threw together some weird sets just to ensure it allowed for the most effective method of clearing up this interaction.

The sets are Thrassian Stranglers, Pelinals Aptitiude, Fortified Brass, and Mighty Chudan Shoulder. The armor types are (1) Light (5) Medium (1) Heavy. All armor is utilizing Divines trait and jewelry using Infused. It is a bow/bow stam build with the main weapon having Nirnhoned. All gear aside from Thrassian is epic quality.

https://imgur.com/a/bbPLAgT

The second to last screenshot contains the proof that I had 20 stacks of Sloads Call at the time of all these screenshots; I wanted to make it clear that it was max stacked for this reason.

The first two screenshots show, with 20 stacks of Sloads call, my WD sitting at 4,290. The second two screenshots show, with a white unenchanted inferno staff with 0 passives in Destruction Staff, my WD only drops to 4037, only 253 points short of using the nirnhoned purple bow. Upgrading that flame staff to purple quality narrows the gap further bringing it to 4132 WD; now only 158 points short. Using Nirnhoned on the staff or having any of the passives would certainly push it over the edge but that wouldn't be using a stamina build.

So if you don't understand yet from all that I'll explain it more clearly here: Thrassian Stanglers only has Spell Damage additions; meaning that your Weapon Damage VS Spell Damage must be higher than one another to be effective for Pelinals; the smaller the gap the greater the benefit from Pelinals and Stranglers.
If you start at 0 stacks of Sloads Call and your WD is 2,250 and your Spell Damage is 1,300 then the first 6 stacks of Sloads call will be completely ineffective granting you literally nothing. The proceeding 14 stacks will raise your WD from 2250 to 4300, the combined total of 20 stacks of Sloads Call and your original 1300 SD.

The answer to this is of course avoid as much WD on your sets as you can and thus why I specifically used the Fortified Brass and Mighty Chudan; these sets grant no weapon damage and so really show how inneffective a build using Stam and Stranglers would be in comparison with the magicka counterpart of its use.

With that said! I don't actually think Thrassian Stranglers should get a stamina counterpart; while I'd be fine seeing buffs given to Malacaths Band of Brutality considering how... lackluster it is in effectiveness Thrassian Stranglers sits in a really neat place and I like where it exists. I just wanted to make this informative post to explain to people why "Just use Pelinals" really isn't a good answer to that whole side of things. In my opinion I'd like to see a function added to Malacaths which grants it extra WD based on remaining crit chance after you've tailored your build around not critting since so many passives in the game grant crit chance that you inevitably have some left over.

For anyone who's really wanting to try a stam build with this item the things I'd do are:
Spell Damage enchants on Infused Jewelry. You want to make sure Sloads is giving you max benefit as soon as it can; thin the distance between your WD and SD as much as possible.
Leviathan Set with Shadow mundus might actually be quite helpful here; since Thrassian is going to grant all your WD you can pour the extra set into crit and maximize out the bonus crit damage you'll be dealing.
If you go the route I did with the build (Yes I've been using this build for overland garbage farming because it actually works pretty okay and is a change of pace) then you can use some armor sets to up your livability and be completely dependent on Thrassians damage increase. If you do this I recommend grabbing Apprentice over Shadow to once again narrow the gap on your WD VS SD.

Overall it's a weird build with mostly niche intentions and not something that would ever score high on charts. Hope this was helpful!