Necron Tactics: Detachments: Mephrit Dynasty Cohort

SoB Ex Zarathusa

Hello all, Mediocre Gamer here to discuss a detachment for Necrons.  What?  No, not the Decurion Detachment.  What?  No, not a Combined Arms Detachment.  What?  No, that’s not all there is.  There is, in fact, a forgotten detachment – the Mephrit Dynasty Cohort.  If you want to read up on more tactics check out Frontline’s Tactics Corner.

The Mephrit Dynasty Cohort appeared in the Shield of Baal Exterminatus supplement, released December 2014, and had a relatively short shelf life, being almost immediately overshadowed by the release of Codex: Necrons and the Decurion Detachment the following month. However, the Mephrit Dynasty Cohort has some things to offer and is worth taking a look at.

The Rules

The Mephrit Dynasty Cohort requires one HQ, and three Troops choices. There are no other requirements beyond those minimal restrictions. The HQ can be any available HQ unit, and the troops can be warriors or immortals in whatever size, configuration and combination suits your desire.   You may optionally add one HQ, five Troops, three Elites, three Fast Attack, three Heavy Support, one Fortification, and one Lord of War. You may not, however, take a Tesseract Vault, as that is specifically denied to the Mephrit Dynasty.

In return for this, you get a couple detachment benefits. You can reroll on the Mephrit warlord traits (see below), and most importantly, your troops can reroll reanimation rolls of 1.

Warlord Traits

The Mephrit warlord trait table is… okay; nothing exceptional, but nothing outright terrible either. They almost universally focus on buffing your warlord.

  1. Warlord gets eternal warrior
  2. All Warlords melee weapons have the Haywire rule.
  3. Warlord and all friendly units within 12” can reroll failed morale, pinning and fear
  4. Warlord has Adamantium Will
  5. Warlord and any model in his unit have Hatred
  6. Warlord has It Will Not Die


Beyond the reanimation reroll, the biggest attraction of the Mephrit Dynasty is the access to some excellent wargear just for them. The Mephrit Dynasty has access to three unique relics unavailable to Decurion or CAD Necrons, while maintaining their access to the items in the Necron codex itself. The best of all worlds.

The first item is the Edge of Eternity. This 20pt melee weapon is available to Mephrit Overlords only. This is a Str +2 Ap2 two-handed melee weapon with Armourbane and Executioner. Executioner gives precision strikes on a 2+. Yeah, not super exciting. But the other two are fantastic, and in the words of the immortal Meatloaf, “Two Out of Three Ain’t Bad.”


The second item is the God Shackle, a lovely little ten point Cryptek only item. Before deployment, you nominate a single friendly C’Tan shard, which can include Nightbringer or Deceiver. So long as the bearer of the God Shackle is alive, the C’Tan gets +1 Str and +1 Toughness. For 10 points?! Hell yeah, and twice on Sundays! For more discussion of this item, check out the soon-to-come Tactics Corner article on the Conclave of the Burning One formation.

The final item, for 25 points, is Solar Thermasite, restricted to Overlords or Crypteks only. It adss +1 Str to the ranged and melee weapons of the bearer, and allows the bearer to rerolls saving throws of one.  This is an absolutely fabulous item to buff your Warlord into the stratosphere. And because Mephrit allows you any HQ choice, such as a Destroyer Lord, the uses of this item becomes readily apparent.


Math doesn’t lie, Mephrit is inferior to Decurion in a straight up match. Running the numbers, the basic CAD reanimation protocol has a success rate of 33%. The Decurion Detachment elevates that to 50%. The Mephrit Dynasty comes in the middle, at about 38.5% – although only for Troops choices. Not as tough as Decurion, while lacking the ObSec of a CAD.

But there can be situations where Mephrit is the better choice. Where Mephrit comes into its own is with the presence of Chronometron toting Crypteks attached to those troops. There, your Mephrit warriors have a 4+ armor, 5+ invul vs shooting, and a 4+ reanimation, rerolling ones. Under that scenario, Mephrit troops clock in at a reanimation success rate of 58% – the best you can get under the current rules. What this means is that a big block of Mephrit warriors led by a Chronotek, and especially if accompanied by a Ghost Ark, is about as resilient as you’ll find. If your battleplan revolves around large warrior blocks that absolutely need the best endurance money can buy, then a Chronotek led Mephrit troop choice may be for you.

Other factors may weight in favor of a Mephrit Dynasty Cohort. Obviously freedom is a big one. While Decurion is powerful, it comes with limitations and tax units. Mephrit does not, while still improving your standard durability. Additionally, by allowing both fortifications and Lords of War, it opens doors that Decurion never will. Want to run that Forgeworld Pylon, or a Doomsday Ark on a Skyshield? Decurion isn’t going to get you there, but much like the honeybadger, Mephrit don’t give a s**t.


In the end, is Mephrit tournament worthy? For serious competition, probably not. But for people with model constraints, or persons who want to run certain units outside their Decurion formation tax, Mephrit is a viable option.  It certainly isn’t bad, not by a long shot.  It’s great for casual games, or less competitive tournaments where you want freedom to try model combinations, while still maintaining that precious look of frustration on your opponents faces when your Necron models refuse to die.  As always, share your thoughts in the comments section! And remember, Frontline Gaming sells Games Workshop product at up to 25% off, every day.



About The Mediocre Gamer

The Mediocre Gamer is an attorney and long time gamer living in Portland, Oregon. He began playing 40k with Rogue Trader and has never stopped. He currently plays 40k and Flames of War primarily.

7 Responses to “Necron Tactics: Detachments: Mephrit Dynasty Cohort”

  1. Avatar
    azgrim December 29, 2015 1:19 pm #

    Edge of Eternity,Solar Thermasite,Nightmare shroud=super tank. Edge of eternity is super under rated . Being able to snipe out models with S8 AP2 is beneficial. Most AP attacks are I1 so you can kill them before they are able to do significant damage.

  2. Requizen
    Requizen December 29, 2015 2:20 pm #

    The only reason I would consider running this is to get a super tank dude with Solar Thermasite. But then, you have to bring 3 Troops units that don’t have either ObSec nor the Decurion Bonuses – at the minimum, 235 points of pure tax. And that’s bad. Sure, those 3 units of Immortals are pretty tough and can camp objectives – but they don’t have ObSec and they’ll die to anything trying hard enough.

    If you were able to take a Mephrit Dynasty Allied Detachment, I’d be through the roof. But as it stands, the tax is too high for a menial payoff. You can reroll 1s with Orikan quite easily and even get it on the whole unit instead of just one guy, and retain your ObSec troops. The +1S is pretty situational overall, and only really matters against Imperial Knights. In the Codex, you can get Voidreaper with Fleshbane and Master Crafted for 10 points more, which is infinitely better against anything with a Toughness Value, though I guess it can’t ID T4 models. Again, very situational at best.

    So, yeah. If the Troops retained ObSec, I’d be all over this. But, if I’m not in a CAD, I’m in a Decurion. There’s really no reason to go for a worse version of both.

    • Avatar
      Luke December 29, 2015 7:45 pm #

      Can’t you just conclave of the burning one to take all of the nice goodies on a cryptek?

  3. The Mediocre Gamer
    Mediocre Gamer December 29, 2015 9:44 pm #

    Yes, you can. A Conclave tactics article is coming soon.

  4. Amir Hayek
    Arabviking December 30, 2015 2:32 am #

    Cool article! Fluff wise, it is weird that special characters can be apart of mephrit dynasty.

    Competive wise, I will probably stick to my CADs and Decurion.

  5. Avatar
    westrider December 30, 2015 8:10 pm #

    The Edge of Eternity is kind of nice, just because it doesn’t cost a dime over a regular WarScythe. Not good enough to take the Dynasty Cohort in and of itself, but if you are taking it anyhow, and you’ve got someone around who’d otherwise be rocking a WarScythe, there’s no reason not to take it.

  6. Avatar
    Castle January 1, 2016 6:24 pm #

    The point about the cryptek making the troops more survivable than the decurion is misleading. The decurion has to include a reclamation legion which gives the same bonus to RP that the dynasty offers in a 12″ bubble around the lord and isn’t restricted to troops, so tomb blades etc can reap the benefit.

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