I can confirm this pulls in very awkward aways. Sometimes just targeting a unit very far away will pick them up, sometimes you don't need to target. This is a good mid-tier trinket especially in M+, but I can't use it, situations where this has %^&*ed me up:
- Post second boss in NW, we all go up, suddently the whole patrol area aggroes and teleports up
- Room of the third boss in NW is fantastic to be *!@#ed by this trinket, happened 3x until I decided to take it off
- HoA: well, pretty much everywhere, including during Invis Pot.

I opened a bug ticket, but nothing so far it seems.

Комментарий от Kartho

Don't use this in Torghast with the reflective damage shield torment. Pretty sure it was feedback loop killing me...

Комментарий от ExBlizFanboy

I'm seeing lots of Blood DK tanks pick this trinket up. Is it still bugged as of 9.1.5 or have people found a way around it's issues?

Комментарий от Nymuen

Hi, I'm using the 233 Priceless Mythic version of the Trinket and today I found out that the tooltip says that it will reflect only up to 971 damage per blow which I'm pretty sure wasn't the case before. Last time I checked it said it reflects around 5k damage per blow - did they nerf it somewhere or is it a bug ? Can someone confirm this or am I tripping ?

Комментарий от Angrymama

I compared Матрица реактивной защиты at LFR 213ilvl vs Кодекс первой техники at 249ilvl from M+.

I hate to say it, but 213 Matrix is superior by quite a margin. So, imho, not worth it. Plus, unless you're going some specific build, AFAIK primary stat is better than pure health.

Here are screenshots for overall healing & overall damage for both trinkets for Spires 8 (Season 3)
https://imgur.com/a/AfNau0D

The only other little note I can add is that Codex does have higher uptime than Matrix, hence providing more steady & consistent DR.

Update 3/21/22:
Screenshot above is on my Brewmaster alt. I have also tested these trinks separately and results are somewhat the same.
However!
However.... These were lower keys & Codex power goes up the more damage you take. After talking to a few bDK's, it appears that Codex is practically BIS for Blood DK's for higher keys!
Good luck out there.

Комментарий от akaRaven

So what's the proc rate on this thing? I got it today and went whacking rares in ZM, noticed that it would proc quite often when I was taking constant damage. Went and whacked Orixal and just stood in the green $%^&, it procc'd constantly like every 3 seconds.

It seems quite nice, but it would be good to know if anyone has compared to the Reactive Matrix to see which is better. I know someone tested both at the same time, but that would cancel each other out.

Комментарий от nevotheless

Just a fair warning for everyone else who things that the oh the trinket "randomly" pulls is fixed already in 9.2.
It still pulls far away enemies you target this didn't change and it's probably intended at this point. Just so you know to not randomly target any groups in a m+ dungeon. This could end miserably for your group.

Комментарий от Ashadan

Yes, you should farm this trinket.

Adding raw date here for people doing big boy tanking and who are considering farming this trinket:

ToP +20
Ilvl 269.7
Vers 28%
Haste 32%

Trinket ilvl: 262

Damage done overall by the trinket: 422 (6.2%)
Healing done overall by the trinket: 358 (6.4%)
Overall HPS: 5.6k
Overall DPS: 6.5k

There was no overhealing recorded by Details for this trinket. It never pulled mobs from far away.

I was running feed the demon with 4-piece, which gives close to 100% uptime on demon spikes. Blood Spatered Scale outperformed this trinket in healing, but this trinket destroyed the scale on DPS. Having both is probably the very best combo now for Vengenace DH.

Комментарий от Feldsomethin

As of 9.2, this trinket will randomly pull mobs outside of the pack being pulled regardless of combat status. Careful using this in higher keys with unforgiving affixes.

Комментарий от Phasha

For Timewalking, I tested this Кодекс первой техники together with Матрица реактивной защиты as tank trinkets:

Первая техника did 4.3% of the effective self-healing, and 1.0% of my damage.
Матрица реактивной защиты did 2.9% of the effective self-healing, and 0.6% of my damage.

So it seems Кодекс первой техники is the stronger passive tank trinket, stats-wise; while Матрица реактивной защиты is better at sometimes preventing death below 20% health.

Комментарий от FireAllianceNX

Bug fixed with nerfs, see https://www.wowhead.com/news/undocumented-nerfs-to-codex-of-the-first-technique-tank-trinket-in-patch-9-2-5-327292

Комментарий от Sonic23

Can anyone please explain how it really works with Guardian Druids Воспоминание о ярости Урсока legendary?
Because, some guides say that this trinket procs only from incoming dmg, that pass after shield from legendary. So it procs very little.
But, on the other look, on wowmeta, a lots of druids use it: https://wowmeta.com/guides/mythic-plus/druid/guardian/bis
So whats the reality in season 4?
Thank You.

Комментарий от Rezguise

As of TWW Season 3, got this from the chest at the end of Tazavesh Streets.

Being it has over 50k stamina, I was very excited to upgrade it.

However, after reading the comments, I made an account here just to confirm something:

It still has a bug where it aggros everything in a 50 yard radius (estimated).

This has been very annoying running M+. I have to believe this is a bug because there is no mention of this in trinket's tooltip.

It is also very bad looking, when a wave of mobs coming running to you from over 50 yards away. Yes, I am not exaggerating the estimated distance. If anything, it might even be farther because it looks insane when the stuff comes running.

I really can't believe Blizzard has not fixed this issue after so many years. If they don't want to fix it, or can't, why not update the tooltip to explain that this will happen?

It is fine for raids I think, since pulling an extra pack or two isn't a game breaker, but in M+, it can really mess up your route and most definitely has wiped me already...

Just a warning.

TL;DR --- As of 2025, this trinket still pulls nearby packs of mobs when it procs. Not good for M+.

Комментарий от Sleec

I can't confirm that it's bugged.

I always picked up and used the trinket when it was current.

I use a tank druid.

Even if it pulls something... 100 meters range is way too much.

Since I find routing, skipping, and sneaking past, way too stupid, I pull other groups than is maximally efficient. Not too many percent, of course, but just differently than the "pro" players specify.

Maybe the trinket pulls nearby enemies if you try to skip them.

But I can't confirm it pulls from other rooms, and I've used it for hundreds of hours.

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