Mortenebra in Mk. 3

So I was like, actually the biggest Mortenabra fan in MK2. I'm having a very, very tough time playing her now, nothing feels "right". I'm not sure how you played her Infernal Machines, but this is what I ran (or something very similar):

Mortenabra
-2x Stalker
-2x Slayer
-Reaper
-Leviathan
-Harrower
-Deathripper
Necrotech
2x Bloat Thrall
2x Warwitch Sirens

Unfortunately, I do not think this list works in MK3. There are a couple of reasons, in no particular order:

-Fewer Overrun targets. Regardless of the ability of Deryliss to 'cast it, and even though you can cast is many times per turn, there just doesn't seem to be the leading infantry there to trigger it in most of the games I've played. You have to work pretty hard.
-Harrower change - okay, you can still do some nasty things but you aren't getting a pseudo-berserk with souls anymore. This means that if you DO get to dig into an infantry unit, you are going to cap out at 4 attacks - sure, one will be your thresher, but you aren't doing to destroy a whole unit anymore.
-Termninal Velocity - hoooooo boy, this is a big deal. No free charges means that the damage potential of these warjacks is out one attack. They already have low P+S, and she has no ARM debuffs, so that compounds to hurt quite a bit. Loss of threat range is also annoying. Finally, again, you aren't seeing as much infantry but it still hurts when you do see 'em.
-Void Gate. Just ugh. I used this all the time to control colossals, and occasionally other 'jacks, but that is no longer an option.
-More warjack-heavy meta. Yeah, we have fairly low POW on Cryx 'jacks in this sort of list. It's a problem when you can't trade well with 'jacks like this. You need the ability to crack armor or control their movement, and Mortenabra doesn't help with this.

Basically, the lists that I would predate on are significantly less common, lists I would struggle to fight are more common, and the lists tooled to fight an army composition like mine are more common. No more dark, hellwrought horse to troll tournament players with.

The good news is Stalkers are still awesome, and good at triggering Overrun. They are not super amazing 'caster assassins anymore, though. I think overall it seems like Mortenabra wants to play more of a gunline these days, probably a Kraken backed up by Ragman or something like that. I think Seethers might have a place here (with base P+S 17, free charges, naturally high MAT, and Berserk vs. infantry for when you do see them), and of course high P+S 'jacks like Barathrum, Nightmare, and Deathjack are helpful and she can....maybe deliver them depending on your opponent's army composition (at least, she'll let them back up 6"). Erebus has some potentially hilarious plays here, with Overrun/Trample moves to get into a 'caster, stationary them, and then shoot them to death.

Most likely, I think she should go back to a MKI style composition, with a couple of units (Raiders/Carrions/Banes) leading the way, followed by 1-2 potent heavies and a couple of combat lights lurking midfield, waiting to dig in on vulnerabilities.