As mentioned before, I always brew with Lilianas. [scryfall]Liliana, Dreadhorde General[/scryfall] is not going to be an exception.
The problem is, with any card, we have to be able to justify it’s use. Then again, do I need any more justification than it’s Liliana? Not really.
Okay, little bit more seriously, we can employ top-down approach here. Top-down means that we take something, in this case a card, but it could be something like a mechanic (proliferate is something we’ll return to at some point) or a tribe.
If we make the assumption that we’ll be playing Liliana in our six-drop slot, that means we can’t play much else there. Well, nothing else, if we won’t to design the deck around her. Now, Liliana doesn’t really need synergies. She just needs enough black sources and she’s good to go. However, this doesn’t mean you don’t want synergies and everything else to work with whatever she’s doing.
What does that mean in practice? Creatures, probably. We also know that with a six-drop in the deck, we are not going to be very aggressive. Since Teferi is still the better win condition in a control deck, we are probably going for a midrange-ish deck, which will probably be the control most of the time.
So, how about this?
[deck]
[planeswalkers]
2 Karn, Scion of Urza
2 Angrath, the Flame-Chained
3 Liliana, Dreadhorde General
[/planeswalkers]
[creatures]
3 Dire Fleet Daredevil
4 Dismissive Pyromancer
2 Krenko, Tin Street Kingpin
2 Plaguecrafter
4 Rakdos Firewheeler
2 Twilight Prophet
2 Siege-Gang Commander
[/creatures]
[spells]
4 Cast Down
4 Bedevil
[/spells]
[lands]
4 Blood Crypt
4 Dragonskull Summit
2 Karn’s Bastion
2 Rakdos Guildgate
7 Swamp
7 Mountain
[/lands]
[/deck]
Admittedly, there’s a lot of cards that are here mostly because I would enjoy playing them, but there we are. [scryfall]Rakdos Firewheeler[/scryfall] does seem somewhat hard to cast here, and is also perhaps quite dependent on the metagame, but I would like to test it.
Why Krenko? Because we can sometimes proliferate it. Otherwise [scryfall]Legion Warboss[/scryfall] would definitely be better.