I've been toying around with this list and its been actually working pretty well, especially against a few meta decks (cough RDW cough). The creatures are fast enough, hit hard enough, and come back to the field often enough to put solid pressure on control matchups. Liliana is a solid threat that deals small amounts of damage while dumping your zombies into the graveyard to be reanimated. Karn is solid card draw, and also good for creating artifact creatures.
Might I suggest upping the Karns and Liliana's to either 2 or 3 of? Another artifact that'll synergize with Phylactery Lich is Treasure Map just as well. Remember, you do NOT have to scry every time once you have Treasure Map and it's flipped side on board. With everyone thing a 4 or less drop, 21 lands seems to be a good number IMO. Use Cast Down instead of Moment of Craving, -2/-2 is good but killing it is better. MoC can see sideboard in the even your opponent's using a problematic legendary creatures. Vraska's Contempt is easily a sideboard for you if one or two don't see main board, I'd personally drop the Duress in favor of Vraska's Contempt. That's my opinion.
Yea i've made the changes you've suggested and the deck is feeling better. I removed the MOC for 2 Walk the Planks and 2 Cast downs. I was using cast down as a sorcery a lot of the time to remove blockers, and the Walk the plank can also hit those pesky legendaries. Also having one or two vraaskas in there is working well even though its at the top end of the mana costs.
I am running treasure map as a 1 of, so far it seems a little slower and clunkier than the Fountains but i'll keep giving it a shot.
Update your initial post to see what you're doing now?
EDIT: Remember, the flipped version of Treasure Map lets you tap to sacrifice treasure's to draw cards. I rather lose 3 flipped Maps but be able to draw up to 12 cards while Fountain needs you to pay 3 to draw 1, which can be 12 to draw 4.
MTG A haha, I was a touch salty last night about facing off against endless RDW decks but I'm over it now.
The deck actually has some legs and performs well, its worst matchup seems to be decks that can go wide (token decks and White weenie decks). RDW is a decent matchup like I said but it somewhat hinges on whether or not this deck gets to play first or not.