This past weekend, another round of Regional Championships concluded. Players from the United States, South America, and Southeast Asia put their Standard prowess to the test. While Esper midrange is still an excellent archetype to play, these Regional Championships proved a bit more diverse than Pro Tour Outlaws of Thunder Junction. Other strong choices, such as Boros Convoke and Temur ramp, were highly represented as well.
On top of that, we saw some intriguing archetypes perform quite well over the weekend. For instance, in the U.S., Gruul aggro bested a field of over 1200 players, showcasing the deck’s capabilities on the big stage.
Looking beyond just the main event, a really unique Dimir Poison strategy made top eight of the 400-player $10k. This deck is quite different than typical Bant Toxic shells and is extremely budget friendly. Its elite performance really caught our attention, and it’s certainly worth going into more detail about what the deck is trying to accomplish.
An Interesting Take on Poison

In general, the most common Poison decks in Standard are built around attacking with lots of Creatures in combat. Bant shells work to go wide with Toxic Phyrexians thanks to the power of
Skrelv’s Hive

Corrupted — As long as an opponent has three or more poison counters, creatures you control with toxic have lifelink.
, then use cards like
March of Swirling Mist

Up to X target creatures phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)
to protect their big battlefield.
This Dimir deck is very different. There are very few Creatures present at all.
Bilious Skulldweller

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
has the potential to get a few hits in, but the deck is not reliant on using Creatures to cross the finish line. As such, this deck is barely vulnerable to opposing removal spells. This begs the question: how does this deck win the game?
Well, the goal is still to give the opponent 10 Poison counters, but this is mostly done by casting spells over the course of a long game. This really is a control deck at heart. Cards like
Prologue to Phyresis

Draw a card.
and
Infectious Inquiry

From there, removal spells like
Vraska’s Fall

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Proliferation Station

Beyond giving the opponent Poison counters in traditional ways, this deck features a multitude of Proliferate cards that quickly become threatening. Disruptive elements like
Drown in Ichor


Experimental Augury


0: You draw a card and lose 1 life. Proliferate.
−2: Target creature becomes a Treasure artifact with "{T}, Sacrifice this artifact: Add one mana of any color" and loses all other card types and abilities.
−9: If target player has fewer than nine poison counters, they get a number of poison counters equal to the difference.
. Obviously, Vraska’s 0 ability can take over the game in unchecked. On top of that, though, your Proliferate cards can quickly add extra Loyalty counters to Vraska itself. As such, reaching the ultimate ability is easier than you might think.
Notably, Vraska isn’t the only Proliferate payoff in the deck.
Venser, Corpse Puppet

Whenever you proliferate, choose one —
• If you don't control a creature named The Hollow Sentinel, create The Hollow Sentinel, a legendary 3/3 colorless Phyrexian Golem artifact creature token.
• Target artifact creature you control gains flying and lifelink until end of turn.
generates value when you Proliferate. Meanwhile,
Voidwing Hybrid

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
When you proliferate, return this card from your graveyard to your hand.
acts as a pesky evasive attacker that is difficult to deal with long-term.
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Exceptional Control Elements

While it may seem a bit strange for a control deck to use Poison counters as its primary win condition, there are some nice payoffs for sticking with this strategy. First and foremost, the two-mana interaction options this deck has access to are top-notch.
Bring the Ending

Corrupted — Counter that spell instead if its controller has three or more poison counters.
does a solid
Quench



Corrupted — Exile that creature instead if its controller has three or more poison counters.
goes from an answer to small Creatures to a full-on
Terminate

Finally, this deck gets to fully maximize
Mirrex

{T}: Add one mana of any color. Activate only if this land entered this turn.
{3}, {T}: Create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This token can't block." (Players dealt combat damage by it also get a poison counter.)
as a late-game closer. As a control deck that primarily casts things at Instant speed, you have the luxury to react to what the opponent does. If they don’t cast anything super important, you can make a token on their end step and start attacking. Eventually, your hoard of tokens will help you emerge victorious.
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Strengths and Weaknesses

Given how this deck is constructed, it’s strengths and weaknesses are quite different from traditional Bant Toxic shells. Bant relies heavily on going wide with small Creatures, so cheap, burly blockers including
Raffine, Scheming Seer

Whenever you attack, target attacking creature connives X, where X is the number of attacking creatures. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.)
can be a bit annoying. Mass removal like
Temporary Lockdown


Dimir, on the other hand, thrives against decks with lots of removal. This deck gets a lot of its mileage outside of combat. Further, this deck plays tons of answers to Raffine and other strong midrange Creatures. As long as you’re given enough time to make use of your Infectious Inquiries and Experimental Auguries, you’re in good shape.
Where this deck can struggle a bit is against decks that flood the board early with Creatures. Even though this deck plays ample two-mana removal, it’s easy to fall behind against fast mono-red starts.
Urabrask’s Forge


Considering how popular Azorius control, Esper/Golgari midrange, and various ramp strategies are in Standard right now, this Dimir deck seems pretty well positioned. It attacks on a very different axis that many players simply aren’t prepared to handle. Plus, this deck is almost entirely made up of commons and uncommons from Phyrexia: All Will be One, which will not rotate out this year. So, if you’re looking for something innovative to craft on MTG Arena or cheap to build in paper, look no further.
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