cEDH deck engineering · Jul 2026

THE GHOST‑SPIDER CODEX

How my pile became a web. Six builds, ten months, one commander. This is my documented path from borrowed slop through an asymmetric prison to a sticky Jenga lattice, with the math that shows what actually changed along the way.

Spider Farm · the current list on Moxfield ↗

Part I

The Doctrine

The vocabulary I steered this whole project by.

JENGA

Linear, synergy dense towers that win fast and fall to one pulled block. Typically comes with Speed and a high ceiling, Typically highly fragile, in other words a glass cannon. My v1 ran four of them at once. Vadrok distilled the storm version.

SLOP

High floor piles of good stuff. Card quality over synergy, nothing individually load bearing. Resilient and grindy, with a capped ceiling. The Twinning lives here, and so does the Rhystic slop meta at large.

LEGACY JESKAI CONTROL: THE ARMOR

The constructed form in which I tried to actually come from,. Legacy's WUR control shells: Swords, dense cheap countermagic, maindeck Pyroblast culture, and winning on card quality plus inevitability. (yup it has it all) KeepSeven's Jeskai Control tournament report on Eternal Durdles is the reference I keep coming back to. My Rhystic, Sentinel, Remora, and hatebear layer is that lineage in 99 card form. It is the armor, not the sword. The pointed inheritance note: Legacy Jeskai runs on Brainstorm and Ponder velocity, the one organ I refused to grow for ten months.

STICKY JENGA (the target)

Fast and consistent and resilient, where the resilience is structural instead of borrowed from card quality (v1) or lockout (v2). Shared blocks across routes, tutors and clones as spare parts, recursion as a second act, and an outlet in the command zone that nobody can remove. A tower that stays up while blocks are being pulled.

Part II

The Journey

Six builds across three shells. Each one taught me something the next one kept, and the discard pile of ideas mattered as much as the keeps.

Sep 2025 · v1 Gwen

The Slop Pile With Four Towers

Slop chassis4 disjoint Jenga packagesGwen was colors only

I started with premium Jeskai good stuff: One Ring, Urza's Saga, Teferi, Intuition, Spellseeker. The result; I ended up carrying four combos that shared almost nothing. Breach with LED, Scepter with Reversal, Dualcaster with Twinflame, Kitten with Teferi. I paid the Jenga tax four times without Jenga's payoff density, and my commander was purely decorative. All in all I Excellent floor, but an unfocused ceiling. When I played it posted respectable games I had presence, but never could close anything out, and never felt like it could.

Kept forward: the Breach and Scepter cores, the free counter shield, the fetch dual skeleton.

Ghost Storm · v1 on Moxfield ↗

Feb 2026 · v2 Gwen

The Asymmetric Prison

Exile-staxFirst Gwen-weaponized buildSelf-hosing

The most conceptually interesting list I have made, and the one I underrated in my own memory. Knowledge Pool, Uba Mask, Memory Jar, Tangle Wire: the first build where exile mattered, because exile prison setup converts the whole table's resource flow into the one zone (exile) only my commander profited from this, without her on the board I was a duck in the water. Wprse yet cards like Uba mask hosed me several times. Uba would blank my own banked interaction, Vexing Bauble would turned off my own free interaction. Overall the list was High concept, but filled with internal contradiction.

Kept forward: Hexing Squelcher, Voice of Victory, the thesis that Gwen should be load bearing. Buried: symmetric prison.

This deck is breaking my back...get it · v2 on Moxfield ↗

Side-lab A · "The Twinning"

The Slop-Control Laboratory (WU)

Rhystic SlopLegacy-control DNAConnective-tissue vault

Alisaie and Alphinaud running my pure value and hatebear plan: Timetwister, One Ring, Saga, Drannith, Lavinia, the Recruiter toolbox. This is where my grind DNA lives, and I love it! The Legacy control philosophy incarnate, but in EDH form. Premium removal, cheap countermagic, individually powerful cards, and inevitability (Though way too slow for the current meta)! It also quietly warehoused everything v3 Gwen later needed During our self reflection: Spellseeker, Intuition, Floodcaller, Aven Interrupter.

Kept forward: proof that my interaction suite wins grinds, and validated Spellseeker's line map in our lattice web.

The Twinning on Moxfield ↗

Side-lab B · "Apex Jeskai"

The Storm-Recursion Laboratory (WUR)

Turbo JengaGraveyard = second hand

Vadrok inherited v1's twin combo and ritual suite, and taught me the second act lesson: a commander that recasts cheap spells from the yard means the first answered Breach is never the last. This is exactly why Shiko reads differently to me than to a netdecker, and will either be brewed or incorporated into Gwen. We only got a few games in on vadrok before the cat was inevitability packed up.

Kept forward: recursion as resilience, Mistrise and Timetwister tech notes, respect for burst mana density.

Fullmetal Mutate: Brotherhood of the Breach · Vadrok on Moxfield ↗

Jul 2026 · v3 Gwen

The Lattice Thesis

Jenga engine, Slop armorExile-matters

The rebuild: Nico, Hex Magic, Moogle chains, clone redundancy (a lot of clones), and the centerpiece: Scepter copies are cast from exile, so my commander converts infinite mana into playing the deck. Every card In this itiration was starting to hold a load when challenged. Peacemaker aged Remoras and feeds counters. Bribery steals slop or an opponent's Thoracle at zero library. Firestorm is board control that loops into a kill...etc

Kept forward: everything. This was the first version where cuts required an argument.

Now · Final Form

Sticky Jenga

99 earned slots5 consistency grafts1 payoff benched

Six grafts Came about after review of our journey and our self reflective brewing: Brainstorm, Muddle the mixture, plus Grinding Station, Spellseeker, then Intuition and Urza's Saga off the wish list, against a single benched payoff in Nico. Muddle reaches four lynchpins. Station is tutorable three ways. Five clone effects are universal spare parts, and the one block no opponent can permanently remove, my commander, sits at the center as the outlet. The review ended the only way a finished list can: every slot earning its place with a named role.

Spider Farm | Sticky Jenga | Self-reflective brew · the current list ↗

Part III

The Mirror: Self-Reflective Brewing

Before touching the lattice (web) or the math, I ran the lens that changed the most decisions: comparing this deck not to other Gwen lists but to the rest of my own roster, because the "brewer stays constant" ~ThunderConductor. I placed my Current Three active decks, all local top 4s at my LGS's in Yakima, Washington, held up to the light against Gwen: Scion of the Ur-Dragon ↗ (5c turbo Breach), Jin Sakai ↗ (Esper midrange control), and Terra, Magical Adept ↗ (5c Breach reanimator).

My fingerprint: cards in 3+ of the 4 decks

An Offer You Can't Refuse · Borne Upon a Wind · Silence · Swan Song · Flusterstorm · Force of Will · Pact of Negation · Mental Misstep · Mindbreak Trap · Esper Sentinel · Mystic Remora · Rhystic Study · Enlightened Tutor · Sol Ring · Mana Vault · Chrome Mox · Mox Diamond · Mana Confluence · City of Brass · Ancient Tomb · Gemstone Caverns · Flash Photography · Sevinne's Reclamation · Hexing Squelcher · Voice of Victory · Ragavan · Smothering Tithe · Starting Town

That list is me, not any commander. Dense free and one mana stack interaction, Silence effects on the win turn, taxing hatebears, enchantment engines, a clone somewhere, and Sevinne's as my recursion of choice. Every deck I build is the same animal, turbo-consistent combo with midrange adaptability, wearing different colors.

Role mapping: how my roster's slots express themselves in Jeskai

Roster constant (Scion / Jin / Terra)Gwen v3.2 expression
Demonic Consultation / Tainted Pact into Thassa's OracleLoop to zero library, then Bribery an opponent's Oracle
Vampiric / Imperial / Demonic tutor spine (8 to 10 per deck)Muddle · Spellseeker · Intuition · Saga · Gamble · Gifts
Necropotence / Ad Nauseam refuelWheel · Jeska's Will · Hex Magic · Rhystic engines
Dark Ritual / Cabal / Culling ritual suite (5 to 6 per black deck)Jeska's Will · Simian Spirit Guide, thinnest in the roster
Underworld Breach (Scion, Terra)Underworld Breach, the one mega-combo constant across all my colors
Saw in Half / Flash Photography copy valueThe five-clone spare-parts bay
Opposition Agent / Lavinia / Dauthi stax bears (Jin)Voice of Victory · Hexing Squelcher · Peacemaker · Ranger-Captain

Finding 1: my Bribery tech I realized was DNA, not typical jinfusion jank. All three roster decks win through Consult and Oracle in black. Gwen is my only deck without black, and I rebuilt my home win axis anyway. Loop to an empty library, then Bribery the table's Oracle. Comparing my own decks validated what outside comparison called a pet card.

Finding 2: my cantrip blind spot has a root cause. Zero cheap cantrips in Scion. Zero in Terra. Top only in Jin. I buy consistency with black tutor density, which is correct in black. I carried that heuristic into the one deck whose colors can't match black's tutor quality, then under-compensated with selection for ten months. Not a Gwen bug. A habit of mine meeting the one deck it doesn't fit. And the Legacy Jeskai lineage this deck claims is defined by the Brainstorm and Ponder engine. The ancestor demands the organ I skipped.

Finding 3: the ritual gap, same story. Every black deck I run has five or six rituals. Gwen runs two burst spells while wanting turbo pacing. My next experiment queue: one or two red rituals (both lived in Vadrok) versus one more cantrip. Testable, cheap, reversible.

The three-pillar audit

PILLAR 1 · SELF

Done above. My constants identified, two divergences (selection, rituals) named with root causes, and one former "pet card" reclassified as DNA.

PILLAR 2 · ARCHETYPE

The commander dictates the axis. Gwen's is the exile engine, and it stays primary. The warning I take from my own roster: over-importing Scion's habits builds a worse Scion, not a better Gwen. The Oracle heist stays backup, never the plan.

PILLAR 3 · META

The asymmetry I have to respect: all three of my black decks run Orcish Bowmasters. Gwen can't, and fields my softest board against it (Gwen 2/1, Sentinel, Ragavan, Spellseeker). Sequencing discipline in Bowmasters pods is my reps priority, and it is Solitude's strongest argument.

Part IV · The Signature Test

The Lattice (The Web): Snap Test

This is my stability demonstration. Tap any card to answer it (tap again to restore) and watch the routes reroute through tutors, clones, and recursion. Try to sever all five.

answers spent 0 · routes standing 5/5
route thread tutor reach clone / recursion

Honesty footnote: clone spare parts assume the original resolved at least once before being answered, and Sevinne's recursion covers destroyed permanents at MV 3 or less. The commander node cannot be permanently answered. She returns to the command zone, which is the structural heart of the whole design.

Part V

The Math

Hypergeometric analysis across all five lists, with formulas shown, work shown, and my honest reading of what moved and what didn't.

The base formula

Every probability below is drawn without replacement from a 99 card deck. For a category of K relevant cards seen over n draws:

P(X ≥ 1) = 1 − C(N−K, n) / C(N, n) N = 99 Worked example, my final list, ≥1 interaction in the opener (K=19, n=7): P = 1 − C(80,7)/C(99,7) = 1 − 3,176,716,400 / 15,094,376,275 = 1 − 0.2105 = 0.787 → 78.7%

Consistency across versions

Opener means 7 cards. "By T3" means 10 cards seen, on the draw with no engines. Categories: fast mana and rituals · sub-2-MV selection · unconditional tutors · interaction.

ListFast mana, openerSelection, T3Tutor, T3Interaction, opener
v1 Gwen53.7%19.3%53.7%76.6%
v2 Gwen45.6%19.3%58.7%76.6%
Twinning57.4%27.6%53.7%74.5%
Vadrok60.7%27.6%48.1%74.5%
v3.1 Gwen57.4%19.3%58.7%78.7%
v3.2, post-review57.4%19.3%67.4%78.7%

Deltas v1 → v3.2: fast mana +3.7pts · tutors +13.7pts (Intuition and Saga land the biggest single-review jump on my record) · interaction +2.1pts (best of all six) · raw selection flat at 19.3%, my documented residual weakness. Two cheap cantrips is still two. I compensate with commander impulse, Hex Magic, and wheels rather than raw cheap dig.

Two-card assembly: the Dramatic Scepter line

The proper model splits access into a for Scepter-specific sources, b for Reversal-specific sources, and w for wildcard tutors that fetch either half, each wildcard filling one missing half. Success over n cards is the multivariate hypergeometric sum:

P(assemble) = Σ [ C(a,i)·C(b,j)·C(w,k)·C(N−a−b−w, n−i−j−k) ] / C(N,n) over all (i,j,k) with: (i≥1 ∧ j≥1) ∨ (i=0 ∧ j≥1 ∧ k≥1) ∨ (i≥1 ∧ j=0 ∧ k≥1) ∨ (i=0 ∧ j=0 ∧ k≥2) v3.2 list: a=4 {Scepter, Enl. Tutor, Moogle, Urza's Saga} · b=3 {Reversal, Mys. Tutor, Spellseeker} · w=4 {Gamble, Gifts, Muddle, Intuition}
Listn=10 (T3)n=13 (T5)n=16 (T7)
v1 Gwen19.4%29.4%39.5%
v2 Gwen21.1%31.5%41.9%
v3.1 Gwen19.4%29.4%39.5%
v3.2, post-review26.8%39.0%50.7%

My honest finding, amended: raw assembly sat flat for ten months. 19.4% in v1, 19.4% in v3.1. Structure improved while my draw odds didn't. Then executing the wish list, Intuition plus Urza's Saga, produced the first assembly gain in this deck's recorded history: 26.8% at T3, up 7.4 points, rising to 50.7% by turn 7. The lattice finally got faster, not just harder to kill:

What actually moved

Structural metricv1FinalΔ
Outlet available once ∞ mana is online42.0% (must draw/tutor Brain Freeze)100% (Ghost-Spider from command zone)+58pts, structural
Win routes sharing ≥1 piece with another route0 of 44 of 5disjoint → lattice
Spare parts (clones + recursion reaching a lynchpin)1 (Sevinne's)6 (5 clones + Sevinne's)×6
Min. answers to sever all routes for good≈5 (one per tower + recursion)≥9, and the outlet is unanswerablethe sticky delta
Breach-line access, T3 (effective copies)42.0%53.7%, and a resolved Intuition pile is guaranteed access+11.7pts

Read together: the deck draws its combo at the rate it always did, but it now keeps what it draws, presents an outlet with probability 1, and forces the table to spend roughly twice the interaction to turn it off. Consistency was v1's inheritance. Stickiness is what I built.

Part VI

Notable Includes

The cards that look strange from outside the lattice and load bearing from inside it, each with the role it plays in my 99.

Patrolling Peacemaker
COUNTER ENGINE

Proliferate ages enemy Remoras; feeds Ghost-Spider, Vivi, Prism.

Bribery
HEIST

Steals slop bombs; at zero library, fetches an opposing Thoracle to win.

Hex Magic
REFUEL

Grip of 7 → access to 14; mass exile-play, full trigger suite.

Delivery Moogle
LOOP PIECE

Kitten loop piece; tutors Scepter, LED, Station.

Clone suite ×5
SPARE PARTS

Universal spare parts; Flash Photography saves pieces at instant speed.

Firestorm
CONTROL / WINCON

Surgical board control; Narset's/Flare loops turn it lethal; Breach fuel.

Pentad Prism
FAST MANA

Unconditional fast mana + filter at 24 lands; Peacemaker refills it.

The standing wish list

1 · Expressive Iteration: two-mana card-advantage engine; digs to routes and refuels the grip across turnsfirst in
2 · Drannith Magistrate: zero self-cost meta hammer vs every Tier 1 command zonemeta hammer
3 · Shiko, Paragon of the Way: one-card second act; Kitten engine; grindy meta callmeta call
4 · Nico Minoru: benched ping outlet; first back if my reps miss the exile-cast damagebench
Gwen returns to the command zone.