A funny thing happened to me the other day.
It happened to me during my brief foray into the StarCityGames.com Legacy Open in Atlanta. In that tournament I was playing U/W Control—the one with Sensei's Divining Top Counterbalance Land Tax and Jace the Mind Sculptor. What happened was that in round 2 I came up against Mono-Black Pox. I lost 2-0.
Of course none of you reading have any reason to think this is funny. None of you are sitting at your computer screens laugh-laugh-laughing away about this funny thing that happened to me last weekend. Of course you could be laughing at the notion of my having a "brief foray" into a tournament—and this one happened to be very "brief"—but you'd be laughing for the wrong reason. What made this funny thing such a funny thing is that I myself had abandoned playing Pox exactly because I was scared to play the U/W Control matchup.
Being defeated by Pox in the hands of Thomas Butler gave me hope for the deck. Realizing that a new potentially format-changing card from Return to Ravnica will be at its absolute best in Pox makes me downright excited.
Abrupt Decay is the Return to Ravnica card most likely to impact Legacy. In Magic's long history there has never been a cheap black removal spell that can stand up to Abrupt Decay in a format where four-drop creatures don't see tournament play. It answers Delver of Secrets Tarmogoyf Dark Confidant and Knight of the Reliquary with no questions asked. It doubles as a versatile answer to Counterbalance Land Tax equipment Sulfuric Vortex and Sylvan Library. The uncounterable clause means you can lean on Abrupt Decay sculpt your game around it and no longer fear being tempoed out by RUG or Stoneforge.
While I'm also a fan of Innocent Blood it's great to split your removal between Edicts and targeted effects. My one tournament loss with Pox came against a Bant player who played a quick Knight of the Reliquary and constantly restocked his shield of Noble Hierarchs and Dryad Arbors to protect it from sacrifice effects.
Pox players have waited a long time for such a card to be printed. The weakness of the deck is its inability to handle noncreature nonland permanents. Games go long so a card like Sylvan Library generating a perpetual advantage is backbreaking. What's more is that being such a grindy attrition-based deck makes it difficult to include utility cards that can't reliably deprive the opponent of their main resources. As I mentioned I had given up on Pox because I refused to play the deck against Counterbalance and Land Tax. Abrupt Decay seems tailor-made to handle these cards.
B/G Pox already existed as a viable alternative to my personal choice of Mono-Black. Notably it was played to a strong finish by Ali Aintrazi back in January. Life from the Loam offers a late game card advantage engine and fringe cards like Pernicious Deed and Maelstrom Pulse are nice to have access to as well. Needless to say I won't lose any sleep over adding green to the deck now that Abrupt Decay exists.
Life from the Loam serves as a way to put the game away after a strong start. The goal of Pox is to bring the game to a topdeck war where it will have a modest advantage because of Liliana of the Veil Cursed Scroll Mishra's Factory and land destruction. For this version to say "modest advantage" would be an understatement. As the game drags on Life from the Loam will continuously generate an advantage with fetchlands offer a devastating engine with Barren Moor and potentially lock the opponent out of the game with Wasteland.
The bad news is that the addition of dredge cards makes playing multiple copies of Nether Spirit impossible but the good news is that the card will be dramatically more powerful now that it can end up in the graveyard without costing you mana or a draw step!
The inclusion of Barren Moor in the maindeck and Bojuka Bog in the sideboard could give someone pause for a deck with only two copies of Life from the Loam as lands entering the battlefield tapped is not generally a winning proposition in Legacy. However Pox plays an overabundance of lands to prevent its own Smallpoxes and Wastelands from setting it back just as badly as the opponent. These inefficient lands can be cycled or discarded if they're inconvenient or played on turn 1 when the deck has no other plays. Don't fret if you play them early and later draw a Life from the Loam since a Smallpox or a Wasteland can put them back in the graveyard and later into your hand where you want them!
Similarly Worm Harvest is admittedly overcosted in Legacy; you'll never be thrilled to see it in your opening hand. However it can easily be discarded to Liliana or Smallpox in such a case and the power it grants in the late game will be well worth the cost. Pox has precious few win conditions to begin with and I've cut one copy of Nether Spirit and one copy of Cursed Scroll from my original decklist. Worm Harvest is a reliable end game win condition since it only requires one slot and can be dredged directly into the graveyard. It can't be beaten by any realistic string of topdecks and it's even a reasonable way to fight planeswalkers.
Pernicious Deed is a useful and underplayed card in Legacy. While being generally powerful and versatile it specifically serves as an answer to Lingering Souls and creature swarm strategies which can pose a problem for Pox's one-for-one game plan. For a modest mana investment it will leave the board spotless clean. Spotless clean that is except for your Liliana of the Veil your unactivated Mishra's Factory and your recurring Nether Spirit. Conveniently it can be added to the board and saved for later use in those games where you need to empty your hand to take advantage of Liliana or Smallpox.
Though I haven't included it in this decklist Maelstrom Pulse is an equally viable option for answering tokens since it can also kill Jace the Mind Sculptor. I've elected to take my chances with the card in game 1 and sideboard Pithing Needle afterwards as Needle can also hit Sensei's Divining Top against Control or equipment against Stoneforge.
This has always been a great matchup and a reason to play Pox. Abrupt Decay is insurance against funny business like Sulfuric Vortex and Sylvan Library and is one more way to keep Tarmogoyfs and Insectile Aberrations from getting out of hand. The RUG player will be left with Nimble Mongooses to fall back on for which you have Smallpoxes Lilianas and Pernicious Deeds.
It's pretty fun having more removal than your opponent has creatures.
The maindeck is already streamlined for matchups like this but you can safely cut the inefficient Worm Harvest since Delver won't be able to permanently answer your other win conditions. Zuran Orb is great with Life from the Loam and provides insurance against being burned out. Also for such a favorable matchup anything that buys you extra time is welcome.
Nether Void while expensive will shut them out of the game if you ever cast it on an even board.
This is another great matchup and feels somewhat similar to RUG. What do the two decks have in common? Green! Anyone trying to attack you with green creatures is going to have a rough go of it. Maverick also usually has five nearly dead removal spells in its maindeck. Thankfully "nearly dead cards" means dead cards where Pox is concerned since you can easily empty their hand with discard before ever giving them a target to point their Swords to Plowshares at.
Here I would leave Worm Harvest in just in case they take out your Cursed Scrolls with Qasali Pridemages or have graveyard hate to remove some of your recurring threats. Maverick has far more mana sources than RUG so Nether Void is less reliable.
This matchup is a little more challenging because of Stoneblade's inherent card advantage and Jace the Mind Sculptor. Do what you can to keep Jace off the board by keeping them either low on lands or empty-handed. If you can do that all the other answers are available to you.
Pox can operate on a wide range of lands (23-26) but I've included the full 26 in the maindeck in order to comfortably fit the second color and all of the value lands you might want. It's hard to have too many since you can constantly sacrifice and discard extras. However against decks that don't play Wastelands of their own you can feel comfortable sideboarding out a Swamp or two.
If you're struggling against Lingering Souls in particular add a Night of Souls' Betrayal to your sideboard (it would come in against Maverick and tribal decks as well). It breaks the back of Esper Stoneblade since it wipes out Lingering Souls Snapcaster Mage and Vendilion Clique all at once.
This matchupis not easy but now you have access to the tools you need to win. Your easiest path to victory will be an unanswered Liliana so use your discard on their Spell Pierces Counterspells and Oblivion Rings. Use your Abrupt Decays on their Counterbalances Land Taxes and Vendilion Cliques. Use your Pithing Needles on their Sensei's Divining Tops and their Jace the Mind Sculptors. Nobody cares about their creature removal!
The three-color build will be significantly easier to beat since it's more vulnerable to Wasteland and it devotes sideboard slots to the Elemental Blasts which won't help them at all in this matchup.
Smallpox while among the best cards in the deck is not at its best against a deck with no sorcery speed creatures. Between Pithing Needle and Abrupt Decay you can shut down all of their major engines and leave them like a broken-down Buick idling in the garage and waiting to be scrapped.
This is the hot deck of the week after its strong showing in the StarCityGames.com Invitational and Max Tietze's victory in the Legacy Open. That's no reason to stress but it is reason to give the deck a little more respect than you might otherwise.
In the absence of sideboard hate Goblins would be a challenging matchup since Pox is all about trading one for one and Goblins is all about having fifty creatures on the table. However with the addition of two Pernicious Deeds and four Engineered Plagues along with the Cursed Scrolls to clean up at the end the matchup will be squarely favorable.
Pox is in a prime position to catch Legacy off-guard. It makes use of the best and most unique newly printed card in Abrupt Decay and attacks the format in a way that's completely different from any deck seeing mainstream play right now. Give it a try!
I am Rakdos. I'm extreme and uncompromising. I want power for the sake of power and no amount will ever be enough. I refuse to be shackled by rules and I have no interest in acting the way people think I should act or playing MTG the way people think I should play MTG. In game my goal is to put my opponent's back against the wall and give them no room to breathe. I deprive them of resources wait for them to stumble and finish them quickly.