Steelswarm (Inverz) Deck #694622 — Yu-Gi-Oh! OCG

53 Main, 15 Extra, incl. Evilswarm Castor x3, Evilswarm Kerykeion x3, Evilswarm Mandragora x3. Created Apr 27, 2026 by YGO Mod.

Created by: YGO Mod (20517634)

Created On: 04/27/2026

Official AI Deck Power Analysis

StunConfidence: Low

25± 10/ 100

Power Score

Structural 50

Reliability 40

Going First 45

Going Second 55

Deck — Deck Power Evaluation

Final Contextual Deck Power: 25/100 (±10 · Confidence: Low)

Overall score	Value
Structural Deck Power	50
Going First	45
Going Second	55
Meta Power	provisional
Tournament Reliability	40

Primary strategy: Stun
Secondary strategies: Control, Midrange
Format: ocg

Legality

Main 53 / Extra 15 / Side 0 — status: Illegal. 2 violation(s).

Identity & game plan

Win condition: Lswarm Xyz boss (Evilswarm Bahamut, Ophion, Exciton Knight) built on a Lswarm board, with Infestation searchers feeding the engine; Evilswarm Castor and Heliotrope extending Normal Summons into Xyz pressure
Turn 1 (going first): Open a Lswarm Level 4 starter, use Infestation Infection or Pandemic to search, and protect the board with Solemn or Impermanence against one interruption
Turn 2 (going second): Hand traps (Ash Blossom, Infinite Impermanence, Solemn Warning, Dominus Impulse) to stop the opponent's summon, then rebuild the Lswarm board from the Deck
Recovery: Rescue Rabbit and Thunderbird return bodies; Kerykeion and Ophion's Infestation search recover the engine after a backrow-heavy hand
After siding: Not evaluable: the deck runs 0 Side Deck cards, so there is no post-side plan

Why it scores here

The deck was scored as a connected Stun system, not from an average of its card scores. Its strength is interaction density: two Solemn cards, Infinite Impermanence, Ash Blossom, Dominus Impulse and Prohibition together give it strong answers to each opposing turn. Its opening is reasonable, with a 0.74 chance of at least one archetype-core card in an opening hand of five, but 32 of the 53 Main Deck slots are Spells or Traps, which drives brick risk up. The Extra Deck is weaker than the Main Deck: Utopic Future and Utopic Draco Future need three same-Rank Xyz monsters the list does not run, and Daigusto Emeral is over its copy limit. Final scoring is capped at 25 because the list is Illegal (Called by the Grave is Forbidden, Daigusto Emeral is over its Limited count). Popularity and archetype usage were not credited, and no win rate or meta share exists to support a higher score.

Dimension scores

#	Dimension	Score	Evidence
D1	Engine Accessibility & Consistency	55	P(at least one archetype-core card in opening hand of 5) = 0.7389 across 12 core copies; core Lswarm starters are present but dependency on a Lswarm monster on board is high (Inferred)
D2	Opening-Hand Quality & Brick Management	40	32 of 53 Main slots are Spells or Traps and 4 hand traps compete for the same hand; full-brick and conflicting-hand risk is high (Inferred)
D3	Combo Conversion & Ceiling	50	No parseable boards; ceiling read from card text only, mainly Bahamut and Ophion control or search lines (Inferred)
D4	Combo Floor & Median Output	40	No recorded combos, so median output is unmeasured and uses card text only (Inferred)
D5	Interruption Resilience & Route Redundancy	50	Rescue Rabbit, Thunderbird and Kerykeion recur bodies, and Ash Blossom and Solemn Warning provide layered responses (Inferred)
D6	Resource Economy, Recovery & Grind	50	Infestation searchers and Ophion's Infestation search provide card flow, but the Gusto recursion is over the copy limit (Inferred)
D7	End-Board & Interaction Quality	75	Solemn Accusation and Solemn Warning x2, Impermanence, Ash, Dominus Impulse and Prohibition give broad, layered interaction (Inferred)
D8	Going-Second & Board-Breaking Power	60	Four hand traps and Ash Blossom give going-second answers to summons; no going-second split is recorded (Inferred)
D9	Offensive Pressure & Closing Power	45	Ophion 2550 ATK and Bahamut 2350 ATK are the main closers; Utopic Draco Future is listed at 3000 ATK but cannot be summoned without its Rank-3 materials (Verified stat / Inferred)
D10	Main Deck Efficiency & Flexibility	55	Compact 24 distinct Main Deck cards with 13 cards at 3 copies, but the Spell/Trap-heavy mix lowers efficiency (Inferred)
D11	Extra Deck Efficiency & Coverage	40	Extra Deck has 12 distinct cards, but the two Utopic Future cards are dead without Rank-3 Numbers and Daigusto Emeral is over its limit (Verified/Inferred)
D12	Side Deck Adaptability	15	0 Side Deck cards, so there is no post-side plan (Verified)
D13	Matchup Coverage & Format Fit	50	No tournament link or dated meta sample; archetype usage is not treated as a meta share (Provisional)
D14	Pilotability & Error Tolerance	45	Multiple Lswarm chains plus a 20-Trap Main Deck create many decision points and timing windows (Inferred)

How the score was computed

Strategy profile: Stun. Structural ≈ 50, Going First ≈ 45, Going Second ≈ 55, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: Illegal copy-limit violations (-6); Dead Extra Deck slots (-4). Final formula: Theoretical only. Structural 50.45 (Stun profile) -> 0.80*50.45 + 0.20*40 = 48.36; modifiers -10 -> 38.36; capped at 25 because the list is Illegal (no normal Final Contextual score)

Probability & combo summary

Opening a starter: P(≥1) ≈ 0.74 · key two-card combo ≈ — · full-brick estimate ≈ — (all Inferred)
Combo output: best PowerIndex —, median —, board-per-starter —
Turn order: 0 going-first lines vs 0 going-second lines

Strengths

Dense, layered interaction: two Solemn cards, Impermanence, Ash Blossom, Dominus Impulse, Full Force Virus
Lswarm monsters recur bodies (Rescue Rabbit, Thunderbird, Kerykeion)
Infestation searchers give some card flow

Weaknesses

Illegal list: Called by the Grave is Forbidden and Daigusto Emeral is over its copy limit
32 of 53 Main Deck slots are Spells or Traps, raising brick risk
Two Utopic Future Extra Deck cards are dead without Rank-3 Numbers
No Side Deck, so no post-side plan

Critical choke points

Any Lswarm Level 4 starter needed on the field before the Xyz line
The Infestation search chain, which all recovery depends on
Going-first hand with no monster and only backrow

Recommended changes

Priority	Remove	Add	Reason
1	Called by the Grave (1 copy) and one Daigusto Emeral (1 copy)	Legal replacements within the limit	Fixes the Illegal status first; without this the list cannot be played as built
2	Both Number F0 Utopic Future cards	Rank-3 Xyz monsters that the Lswarm line can use, or Lswarm Level 4 monsters	Removes dead Extra Deck slots
3	Two or three Spell/Trap bricks	Lswarm monsters or Infestation searchers	Reduces the 32-Spell/Trap count and brick risk
4	No Side Deck	A Side Deck of 5-15 cards	Gives a post-side plan; D12 is currently 15

Evidence & confidence

Verified: Illegal status: Called by the Grave Forbidden (1 copy), Daigusto Emeral over limit (2 vs 1); 53 Main / 15 Extra / 0 Side; Steelswarm (Inverz) archetype; 0% exact-name purity
Inferred: Stun primary strategy from interaction density (7 Solemn/Ash/Impermanence-type cards and a 0.74 archetype-core hand probability); Brick and consistency read from Spell/Trap count; Going-second plan from hand-trap count
Provisional: Meta or format fit (no tournament link or dated sample)
Data gaps: No combos supplied: floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot record absent No win-rate telemetry for going-first, going-second, matchup or brick rate Meta Power provisional; no dated metagame sample Deck title is null in the export

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More OCG Info

Steelswarm (Inverz) Breakdown