Butcher 3 + Conquest

In Mark 2 my main Butcher 3 list always had conquest, though I admittedly always had Malakov 1 to run it. That said, it's not the end of the world to run one with butcher 3. It can't make use of energizer sure, but it does like silence of death. And generally, if the conquest is killed it took a decent amount of the opponent's heavy hitters to do so. Butcher can then take them all out himself.

Remember that you're putting a lot of points on to Malakov, and if he dies, Conquest goes inert. Then remember that you've got Butcher, so you're still fine.

You can be a little agressive with the conquest. Use it to try and draw some attention away from Butcher. If the Conquest is destroyed, you're still fine because you've got Butcher on the table. If you're at risk of losing Malakov, try to position the conquest in a way that will annoy or hinder the other player, like on the edge of a zone on their side. Sure, the conquest can't contest or control, but it's still a huge base the opponent has to work around.

The older theory was that most lists just can deal with both.

I'd play it agressive with it on B3 though.

I Dont know, Silence of Death is pretty good. The only issue is that B3s only range extender doesn't work on Connie.

But as an anchor, you could make a very beefy list with Man o Wars and Conquest. And just steamroller up the board. Wouldn't work against everyone, but what kills Conquest will then die to Butcher.

The thing is with B3 you always want to have that threat to reach out and touch someone with Lola. If B3 is hunkered down behind Conquest and Conquest gets hung up then it can limit what B3 can do. Also, the only things B3 can give Conquest are focus and +2 STR which it doesn't really need. Energizer is an incredibly useful spell in my experience and having multiple heavies to use it on is a nice thing. The issue I'm seeing with list building is that it becomes difficult to take colossals and character jacks when our base model jacks are both cheap and very effective. A simple 10 pt Marauder or 12 pt Juggernaut can get a lot of work done in MKIII. Multiple heavies can also cover more of the board. This is good when playing Steamroller. The one character/colossal that is still always tempting is Behemoth even though he's pricy because two 4 inch AOEs with Powerful Shot and Arcing Fire is really good.

The B3 way of operation is simple. Present opponent with X points of hard to remove stuff he has to remove and then kill whatever he committed with B3.

Conquest definitely demands to be removed, but it's easy to remove relatively to it's point cost. The way to fix it I think is to take mow shockies and put them in front of Conquest. You'll have a durable 2 layers which both require committing heavies to remove them and then B3 final boss.

So:
B3
-Conquest
-Dog
Shockies+UA+Kovnik
min Mechaniks

And then whatever.