Seems like he's come up a lot recently in the threads as one of our worst. So for a tournament this past weekend for 50 pts, I threw a list together for giggles to kick around:
Max Bane Thralls
Max Bane Knights
Revenant Cannon Crew
I won the tournament, playing this list once against a Beast Heavy eMorghoul list and once against a slightly less beast heavy Kaya list. I played a Coven list the first game.
A few things about eGore first. 1. If you take him, it means you WANT to play him. He is by far the most boring caster in terms of performance and what you'll get out of him. He has a few gimmicks (Phantom Hunter for the battlegroup and Sudden Death), which are not as powerful as other caster gimmicks that we can bring to the table. His feat is powerful tool, but you have to know when to use it. Often times, you'll find it's your army that wins you the game and not him.
I see two ways to play him (maybe three). The first is maximize the utility of the feat. This is done as suggestions exist in other threads by taking Mechanithralls and a Necrosurgeon. Since we have Mechani's, taking Brutes for a Brute delivery system isn't bad at all (plus side, you can bring them back). Then take a lot of multi-wound troops - Soul Hunters, or expensive, such as Bane Thralls or Bane Knights. Phantom Hunter an arc node to run up and cast Curse of Shadows so your models can charge through. Nightmare or Deathjack are excellent warjacks to compliment this kind of list. Pitfalls are going to be ranged lists that can ignore Stealth or lists great at dealing with infantry (eFeora comes to mind).
The second is to use the feat as more as a way to reposition at the end of your turn. This utilizes mostly just Banes. It's more a balanced list in respects to range & combat than the one that tries to maximize his feat. The Leviathan becomes the best candidate for Phantom Hunter. Ranged components include Pistol Wraith, Revenant Cannon Crew, or Bloat Thralls. Arc nodes aren't a necessity, but you should have something to deal with solos as spending Banes is a waste. Black Ogrun have their place in this list as well, if you think you can spare the points somewhwere. Assassination is just brutally bringing Bane after Bane back. While I can be outranged most cases, I bring something to the table.
I say a third playstyle and it's whether or not to include Bane Thralls in the list. Including them nearly requires you to include Tartarus, which isn't a bad choice at all. But feeling the point constraints, could you do without? The answer is of course, yes you could. However, if you want to maximize your feat, adding more bodies is awesome. On the flip side, it is costly combination since you can fit in three units of Mechanithralls in for the points.
I'll go indepth in a following post on why I took the models I did, what I found, and what would change.