Land destruction is probably the most hated strategy in all of Magic. There's basically nothing worse than sitting down to play a nice game and being unable to actually do anything. If this deck has its way, you won't cast a single spell. I love it.

It all starts with Crack the Earth and Smallpox, two effects that are supposed to be symmetrical. Flagstones of Trokair is the best way to break that synergy, but did you ever think to try Chromatic Star? Nihil Spellbomb works too, but it requires a tax of one black mana. I would say the vast majority of the time, these effects are going to work in your favor.

Liliana of the Veil is kind of a no-brainer in a deck like this, although I'm surprised to see only two copies. Once you cast a Crack the Earth or Smallpox, there's no card you'd rather follow those up with. Myth Realized plays the role of finisher, although it's also backed up by some planeswalkers. I really enjoy the choice of finishers because they are all difficult to deal with in their own way.

Go forth and make your opponents miserable!

Creatures (2)
2 Kor Firewalker ww 3.00
Spells (40)
4 Chromatic Star 1 10.16
4 Lightning Bolt r 8.36
4 Crack the Earth r 0.68
4 Inquisition of Kozilek b 58.00
4 Stone Rain 2r 0.60
3 Smallpox bb 1.02
3 Timely Reinforcements 2w 9.51
2 Liliana of the Veil 1bb 194.18
2 Nihil Spellbomb 1 0.38
2 Zealous Persecution wb 0.52
1 Ajani Vengeant 2rw 7.39
1 Chandra, the Firebrand 3r 3.69
1 Molten Rain 1rr 2.08
1 Nihil Spellbomb 1 0.19
1 Leyline of the Void 2bb 4.39
1 Boil 3r 0.29
1 Damnation 2bb 54.50
1 Wrath of God 2ww 4.20
Others (3)
3 Wear
Lands (10)
4 Flagstones of Trokair 38.20
3 Godless Shrine 28.50
3 Sacred Foundry 37.41
55 Cards Total $467.25

Breakdown

Spells
4 Smallpox-The engine of the deck. Smallpox causes the game to start grinding down, and symmetrically attack both player's resources and life. The key to a good Pox deck is to abuse the symmetry of the card by making sure you gain advantage from it, or that your loses are not as great as your opponents. The deck has lands, cards, cheap token creatures that all are abusive with Smallpox--Lingering Souls, Flagstones, etc.
4 Stone Rain-Legacy Pox decks tend to play Sinkhole, and Stone Rain fills that niche quite nicely. More or less a one-for-one trade off for land and card, Stone Rain can easily attack mana and deny lands for opponents trying to escape and recover after great losses of resources.
4 Lingering Souls-Token maker, Liliana and Smallpox fodder. The tokens are great sac targets for Smallpox and Crack the Earth, with them chump blocking and evading when necessary. A staple in Pox decks for Modern.
4 Inquisition of Kozilek- While I have my doubts that this card should probably be Thoughtseize, Inquisition has proven it's worth nicely. Able to stop early turns and deal with most of the formats major spells, it's one of the best turn 1 plays this deck has.
4 Lightning Bolt-Burn and removal.
4 Crack the Earth-So this card...A symmetrical effect that can be abused greatly. Once we start getting our opponent down to a 1-2 lands, it's another Stone Rain effect. We can sac our Flagstones to negate its effect and fix mana, sac Chromatic Star and Spellbomb to draw cards, sac our tokens only to get them back...a very nice find and certainly a staple.

The Pay off
3 Myth Realized-The deck's namesake and win condition. It just so happens that all of the spells trigger it, and all of them happen to be cheap. We can get this thing to a nice size quickly, and is a nice way to wrap the game up once we have locked out opponent out of resources and cards. Plus, once they start passing the turn back and start the "draw-go" phase of the game, we can charge it up manually.

Walkers
2 Liliana of the Veil-Ms. Vess's most played form, an easily inclusion in this deck. Discards, deals with big threats...
Other walkers-Sorin, Ajani, and Chandra all have their major roles here, and playing them as one ofs makes some sense. Chandra's big pay off is that she can Fork spells. Getting more tokens with Souls, Smallpoxing twice, Double Stone Rain, Double bolt--all seem appealing. Ajani can Armageddon them, and Sorin's ultimate and token fodder play nicely. I feel like maybe Sorin should be Sorin, Lord of Innistrad, but Solemn Visitor has been sweet.

Artifacts
Mostly fodder for Crack the Earth, each of them can draw a card EVEN IF their abilities have not been activated. Nihil Spellbomb can randomly hose Gifts Ungiven and Dredge decks.

Lands
Most of the lands make sense here. Urborg lets Smallpox and Liliana be castable and Flagstones, combined with Smallpox and Crack the Earth, gets us lands to fix mana and negate their effects.

Research has shown that turn 1 Urborg, discard spell-turn 2 Flagstones, Smallpox is the grossest thing you can do in Modern.