This deck is hot, I love Death Cloud, but here's what I'd Change.

-3 Haunted Plate Mail, You don't need it if you're playing four copies of Wurmcoil Engine, I'd make those three copies of Liliana of the Veil, since she works well with Death Cloud.

-4 Prophetic Prism, change them to Golgari Signet, they'll fix your mana better.

I love Liliana of the Veil , but I'm trying to do my best to restrict all the non-ramp, non-Death Cloud cards to ones that carry their own win condition. However, you did get me thinking about other Planeswalker options. My very first thoughts for this deck included Garruk Wildspeaker , but I was concerned that the GG in his cost would cause issues. Along with the other change I'm going to make (also from your suggestions), that shouldn't be a problem.

The card draw from Prophetic Prism is really important for keeping me moving through the deck (not card advantage, but something called "velocity", which you don't hear come up very often in deckbuilding discussions because for most decks it's not all that important). However, I'm taking your suggestion of Golgari Signet and changing it around to replace Verdant Catacombs with Twilight Mire . Hopefully it will land alongside my shocks and filter-artifacts often enough to make the colored mana I need when it counts.

Thanks for the comment, you helped a lot!

Okay, after a good number of playtests the Twilight Mire turned out to be a big burning heap more often than it was helpful. Because Garruk is now here to help, turning it back into Verdant Catacombs helps me crack the BBB for Death Cloud .

Another interesting option might be to run Liliana of the Dark Realms and another black shock land in place of Verdant Catacombs .

This would allow you to construct a very robust sideboard (options like Demonfire , Devil's Play , Divine Deflection , Reap Intellect ... you get the idea).

I realize that this version of lily does break your standalone win-con rule, but she seems to have a lot to offer (helps you grab mana into death cloud, as well as assisting with recovery afterward, creature buff/debuff), especially if you pair the amount of land tutoring you have available with something like Urborg, Tomb of Yawgmoth (post-tron establishment preferably).

I think you shouldn't play deathcloud but gaze of granite it doesn't kill your lands

The point of Death Cloud is that it kills my opponent's lands, empties his hand, and burns him for a significant chunk of life. In comparison, I'm left with some wurm tokens and maybe even a planeswalker. If the opponent doesn't just scoop to that, the game will be over soon anyway.

Gaze of Granite also kills my planeswalkers and artifacts, which is undesirable.

maybe Liliana of the Veil ?

You're right. She was in the sideboard of the last version of this deck, and she really needs to go back. She's so good against control and midrange.

She's amazing. A similar deck I found by pheonix_222: