Diagnosis - September 20, 2026

Yawgmoth’s published volume was modest this week, but the lists that succeeded produced the clearest structural development since the lands package emerged: NickBolas90 went 5-0 on September 17 with a blue splash for three [[Consign to Memory]] in the sideboard. The list keeps the [[Mole Man, Moloid Master]] / [[Icetill Explorer]] / [[Shifting Woodland]] / [[Ghost Quarter]] engine and adds a singleton [[Breeding Pool]] to support the splash.

Two other results matter. Arimoto Riku made Top 8 of a 17-player paper event on September 19, and the published card data confirms another maindeck [[Spore Frog]]. Accio went 5-0 on September 13 with a much more conventional Golgari shell, but independently repeated [[Bridgeworks Battle]] and moved all the way to four [[Dredger’s Insight]].

A major result from the previous weekend also became fully available after the last report: at the 1,486-player Baltimore Regional Championship, Shelkofsky went 11-4, Zane Toledo 10-4-1, and John Moore 10-5 with classic Yawgmoth. Shelkofsky retained the Spore Frog and Bridgeworks Battle package from the Dallas Spotlight, so those cards now have evidence from two consecutive enormous paper events in the same pilot’s hands.

The broad archetype remains competitive at a 53% 30-day win rate, but the bad-matchup cluster has sharpened. Esper Blink and Amulet Titan are the clearest problems, while Living End remains persistently poor. Izzet Prowess and Eldrazi Bloodchief Combo have also moved back below even in the current sample.

Recent successful Yawgmoth lists

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September 19

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September 17

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September 13

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September 12 — late-indexed major results

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Notes on the lists

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NickBolas90 supplied the week’s actual innovation. The September 17 5-0 plays 3 [[Yawgmoth, Thran Physician]], 3 [[Walking Ballista]], 4 [[Agatha’s Soul Cauldron]], 3 [[Green Sun’s Zenith]], only 2 [[Malevolent Rumble]], and 4 [[Dredger’s Insight]]. The lands package remains: 1 [[Mole Man, Moloid Master]], 1 [[Icetill Explorer]], 1 [[Ghost Quarter]], and 1 [[Shifting Woodland]].

The new element is a singleton [[Breeding Pool]] in the mana base and 3 [[Consign to Memory]] in the sideboard. The rest of the sideboard is 2 [[Ashiok, Dream Render]], 3 [[Fatal Push]], 2 [[Force of Vigor]], a second Ghost Quarter, [[Guerrilla Gorilla]], [[Pawpatch Formation]], and 2 [[Vexing Bauble]]. There is no [[Thoughtseize]] at all.

The Consign splash lines up directly with the current field. Eldrazi Bloodchief Combo, Izzet Metalcraft, Eldrazi/Tron strategies, and Esper Blink are all heavily represented, and Consign can interact with colorless spells or triggered abilities while costing only one blue mana. The fetch-heavy Yawgmoth mana base makes a single Breeding Pool enough to support a sideboard splash without rebuilding the deck.

Accio demonstrates that the most important maindeck movement is not tied to the lands package. The September 13 5-0 is conventional Golgari, with no Mole Man, Icetill Explorer, Shifting Woodland, or Chord, but it also plays 4 Dredger’s Insight. It uses 2 [[Sephiroth, Fabled SOLDIER]], 3 Yawgmoth, 3 Ballista, 3 GSZ, 3 Rumble, and 1 [[Bridgeworks Battle]].

Accio’s sideboard is unusually polarized: 4 [[Abrupt Decay]], 3 [[Soulless Jailer]], 2 Force of Vigor, 2 Vexing Bauble, then one each of [[Culling Ritual]], [[Endurance]], [[Grist, the Hunger Tide]], and [[Outland Liberator]]. Like NickBolas90, Accio omits Thoughtseize entirely.

Shelkofsky retained the same unusual core in Baltimore that had produced the 12-3 Dallas Spotlight finish: 1 [[Spore Frog]], 1 [[Bridgeworks Battle]], and 1 [[Chord of Calling]] alongside 3 Insight. Going 11-4 in a 1,486-player Regional Championship one week after the Dallas result makes this package much harder to dismiss as tournament-specific novelty.

Zane Toledo and John Moore converged on another coherent branch: 3 [[Orcish Bowmasters]], 3 Insight, 3 Yawgmoth, 3 Ballista, only 2 GSZ, and no Chord. Their strong finishes in the same 1,486-player event are good evidence that the Bowmasters configuration is a real alternative rather than a League-only experiment.

How Yawgmoth adapted this week

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The clearest maindeck movement is toward more [[Dredger’s Insight]]. Both current MTGO 5-0s play four copies, despite using very different shells. The Baltimore lists were mostly on three. The zero-Insight experiment from August now looks like the outlier rather than a direction the archetype is following.

The deck remains split on the final engine package. NickBolas90 is still succeeding with Mole Man/Icetill Explorer land recursion. Accio succeeds without it. Shelkofsky retains a singleton Chord and toolbox bullets. Zane and John use three Bowmasters and no Chord. There is no reason to declare one of these packages universally correct.

The more important convergence is sideboard customization away from generic discard. NickBolas90 and Accio both omit Thoughtseize completely and instead devote large blocks of slots to targeted interaction: Consign/Ashiok for Nick; Abrupt Decay/Jailer for Accio. The paper Baltimore lists remain more conventional, so this is an online development rather than an established universal shift.

[[Spore Frog]] and [[Bridgeworks Battle]] have both moved beyond one-result curiosities. Spore Frog appears again in Arimoto Riku’s September 19 Top 8 after Shelkofsky’s Dallas and Baltimore results. Bridgeworks Battle appears in Accio’s September 13 5-0 in addition to Shelkofsky’s two major-event lists.

Decks pressuring Yawgmoth

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Esper Blink is still the most important bad matchup. Yawgmoth is at 35% over 20 recent matches, and Blink remains a Tier A deck. The September 19 MTGO RC Qualifier also put three Esper Blink decks in the Top 16. This is no longer a small-sample warning.

Amulet Titan is at 33% over nine matches. The sample is smaller, but the result has been persistently poor for several weeks. [[Ashiok, Dream Render]] remains one of the best overlapping answers because it also has applications against graveyard and search-heavy decks.

Living End remains at 33% over six matches. Again, the sample is small, but the direction has remained stable. A maindeck [[Endurance]] plus further graveyard interaction remains justified.

Izzet Prowess has slipped back to 45% over 42 matches. That is now the largest unfavorable matchup sample and deserves more weight than the week-to-week fluctuations seen earlier. Three Fatal Push is a sensible default again.

Eldrazi Bloodchief Combo is at 47% over 34 matches and is one of the largest decks in Modern. It also placed five copies in the Top 16 of the September 19 MTGO RC Qualifier. This is one of the strongest arguments for NickBolas90’s Consign experiment.

Izzet Metalcraft is also slightly unfavorable again at 47% over 19. It won the September 19 RC Qualifier. Two Force of Vigor remains difficult to trim, even if Consign provides another overlapping angle.

Boros Energy, Eldrazi Ramp, Eldrazi Tron, Domain Aggro, and Esper Reanimator are all currently favorable or roughly favorable in the available Yawgmoth data. Do not spend additional sideboard space trying to fix those matchups at the expense of Blink, Amulet, Living End, Prowess, and the Eldrazi/Metalcraft cluster.

Sideboard cards overperforming

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[[Consign to Memory]] is the week’s strongest signal. NickBolas90 devoted three sideboard slots and a maindeck land to enable it in a 5-0. It was also one of the most-played sideboard cards across the September 17 League generally, so Nick’s change is responding to a broader metagame trend rather than inventing a narrow Yawgmoth-specific answer.

[[Ashiok, Dream Render]] remains well positioned. Nick plays two, and Amulet Titan remains one of Yawgmoth’s worst established matchups. Ashiok also overlaps graveyard and search-based strategies.

[[Force of Vigor]] remains the most stable non-black sideboard card. Both Nick and Accio play two, and Izzet Metalcraft won the September 19 RC Qualifier.

[[Fatal Push]] remains important because Izzet Prowess has moved back below even over a relatively large 42-match sample. Nick plays three.

[[Abrupt Decay]] is the highest-variance successful package. Accio plays four, far more than the one or two copies seen in previous successful lists. That is enough to take the card seriously, but one League 5-0 is not enough to make four copies standard.

[[Soulless Jailer]] reaches three copies in Accio’s sideboard. Living End remains bad and Esper Reanimator remains one of the format’s most-played decks, but the jump from one to three should still be treated as a list-specific choice rather than a new default.

[[Vexing Bauble]] remains common across both Yawgmoth sideboards and the wider Modern field. Two copies appear in both NickBolas90 and Accio.

New or newly relevant cards in Yawgmoth lists

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[[Consign to Memory]] is the genuinely new Yawgmoth development. The card is not new to Modern, but splashing blue specifically to play three copies is new for the successful current Yawgmoth lists. The combination of one [[Breeding Pool]] and three Consigns is the package to test this week.

[[Spore Frog]] has graduated from one-off experiment to recurring tutor bullet. Arimoto Riku’s September 19 Top 8 provides independent-pilot evidence after Shelkofsky’s two large-event finishes.

[[Bridgeworks Battle]] has also gained independent evidence. Accio’s 5-0 repeats the card after Shelkofsky’s Dallas and Baltimore lists, supporting the idea that the MDFC removal spell fits the deck at very low opportunity cost.

The final structural signal is the move to four Dredger’s Insight in both current League 5-0s. That is not a new card, but it is the clearest maindeck copy-number change of the week.