Kaiju Deck #770386 — Yu-Gi-Oh! Master Duel
40 Main, 15 Extra, incl. Mulcharmy Fuwalos x3, Thunder King, the Lightningstrike Kaiju x3, Bot Herder x3. Created Oct 21, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 10/21/2026
Main Deck (40)
- Crystal Beast Cobalt Eagle x1
- Fabled Lurrie x1
- Fiendsmith Engraver x2
- Gameciel, the Sea Turtle Kaiju x1
- Lacrima the Crimson Tears x1
- Maxx "C" x1
- Mulcharmy Fuwalos x3
- Radian, the Multidimensional Kaiju x2
- Santa Claws x1
- Thunder King, the Lightningstrike Kaiju x3
- Bot Herder x3
- Fiendsmith's Tract x1
- Forbidden Droplet x3
- Harpie's Feather Duster x1
- Heavy Polymerization x3
- Interrupted Kaiju Slumber x1
- Kyoutou Waterfront x1
- Pot of Sloth x3
- Triple Tactics Talent x1
- Triple Tactics Thrust x2
- Ultimate Slayer x2
- Rainbow Bridge of Salvation x3
Extra Deck (15)
- Denial Deity Dotan x1
- Fiendsmith's Lacrima x1
- Garura, Wings of Resonant Life x1
- Snake-Eyes Doomed Dragon x1
- Fiendsmith's Agnumday x1
- Fiendsmith's Requiem x1
- Fiendsmith's Sequence x1
- Moon of the Closed Heaven x1
- S:P Little Knight x1
- Tri-Brigade Arms Bucephalus II x1
- Old Entity Cthugua x2
- Golden Cloud Beast - Malong x1
- D/D/D Wave High King Caesar x1
- Super Starslayer TY-PHON - Sky Crisis x1
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41± 7/ 100
Power Score
Structural
48
Reliability
40
Going First
38
Going Second
60
Deck — Deck Power Evaluation
Final Contextual Deck Power: 41/100 (±7 · Confidence: Medium)
| Overall score | Value |
|---|---|
| Structural Deck Power | 48 |
| Going First | 38 |
| Going Second | 60 |
| Meta Power | provisional |
| Tournament Reliability | 40 |
- Primary strategy: Toolbox
- Secondary strategies: Blind-Second/OTK
- Format: master-duel
Legality
Main 40 / Extra 15 / Side 0 — status: Legal.
Identity & game plan
- Win condition: Kaiju board-breaking and high-ATK beaters (Thunder King 3300, Radian 2800, Gameciel 2200) once the opponent controls a monster that enables their Special Summon.; Extra Deck beaters from the mixed sub-archetypes (Tri-Brigade Arms Bucephalus II 3500, Denial Deity Dotan 3000, Snake-Eyes Doomed Dragon 3000).
- Turn 1 (going first): Search and draw with Pot of Sloth, Triple Tactics Talent and Fiendsmith's Tract. The Kaiju Summons need an opponent monster, so with an empty opposing board the T1 line is thin and depends on tech and searchers.
- Turn 2 (going second): Special Summon a Kaiju from hand by tributing the opponent's monster, then clear the board with Radian, Gameciel, Harpie's Feather Duster and Interrupted Kaiju Slumber.
- Recovery: Searchers (Fiendsmith's Tract, Fiendsmith Engraver, Kyoutou Waterfront) and Mulcharmy Fuwalos draws refill the hand; Fiendsmith Engraver can recur from the GY.
- After siding: No side deck is registered (0 cards), so there is no post-side plan.
Why it scores here
The deck is scored as a system. Its Kaiju core (Thunder King and Radian at three and two copies, plus Gameciel, Kyoutou Waterfront and Slumber) is only eight cards, and it needs an opponent monster to Special Summon, so consistency is limited on the going-first side. Interaction is comparatively good: Forbidden Droplet, Harpie's Feather Duster, Ultimate Slayer, Gameciel and Radian give several layers of answers, and the Extra Deck supplies high-ATK closers. The mixed sub-archetypes (Fiendsmith, Mulcharmy, Polymerization, Greed, D/D, Tri-Brigade) reduce engine coherence, and the zero-card side deck leaves no post-side plan. No combo records or win data exist, so the score comes from consistency, interaction and closing power on the list itself. The score does not come from the Kaiju archetype being popular, and it is not an average of individual card scores.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 35 | P(at least one of 3 copies of the Kaiju starter in a 5-card opening hand) is about 0.34; the searcher group reaches about 0.78 (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 40 | Eleven singleton slots and many Kaiju or Fiendsmith cards that are dead without the right board state; no brick estimate is available (Inferred) |
| D3 | Combo Conversion & Ceiling | 48 | No recorded boards; the ceiling is a text-only read of Kaiju Summon to negate/destroy with a 3300-ATK beater (Inferred) |
| D4 | Combo Floor & Median Output | 40 | No recorded boards, so the floor and median cannot be measured; the guide describes board-breaking and OTK (Provisional) |
| D5 | Interruption Resilience & Route Redundancy | 50 | Searchers and Fiendsmith recursion provide some independent lines after disruption, but the Kaiju line needs an opposing monster (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 55 | Pot of Sloth, Mulcharmy Fuwalos, Maxx C and Triple Tactics Talent provide draw and card flow (Inferred) |
| D7 | End-Board & Interaction Quality | 62 | Forbidden Droplet, Harpie's Feather Duster, Ultimate Slayer, Gameciel and Radian give layered interaction (Inferred from card text) |
| D8 | Going-Second & Board-Breaking Power | 62 | Strong when the opponent has a monster: Kaiju Summon and Slumber/Duster clear the board after the opponent's first play (Inferred) |
| D9 | Offensive Pressure & Closing Power | 65 | Several 2800 to 3500 ATK bodies in the Main and Extra Decks, including Thunder King 3300 and Tri-Brigade Bucephalus II 3500 (Verified stats) |
| D10 | Main Deck Efficiency & Flexibility | 42 | Only 14.5% of the Main Deck is exact Kaiju (8 of 40 copies); 47 copies are off-archetype and 24 cards are level 0 spells (Verified composition) |
| D11 | Extra Deck Efficiency & Coverage | 48 | Extra Deck is 15 cards across 14 distinct names, with Fiendsmith, D/D, Tri-Brigade and -Eyes lines competing for slots (Verified composition) |
| D12 | Side Deck Adaptability | 15 | No side deck (0 cards), so no post-side adaptation exists (Verified) |
| D13 | Matchup Coverage & Format Fit | 40 | No tournament link or dated metagame sample; Meta Power is Provisional and this score is not weighted by matchup (Provisional) |
| D14 | Pilotability & Error Tolerance | 40 | Multi-archetype sequencing with many decision points and no recorded step counts (Inferred) |
How the score was computed
Strategy profile: Toolbox. Structural ≈ 48, Going First ≈ 38, Going Second ≈ 60, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: unrecoverable choke point (-3); engine conflicts (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional; D13 dropped and weights renormalised for the meta-neutral Structural)
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.34 · 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
- Layered interaction: Forbidden Droplet, Harpie's Feather Duster, Ultimate Slayer, Gameciel, Radian, Maxx C
- High-ATK closers across Main and Extra Deck
- Searcher density (10 text hits) gives some hand refill
Weaknesses
- Kaiju starter needs an opposing monster to Special Summon
- Core Kaiju count is only 8 of 40 Main Deck cards; the rest is off-archetype
- Zero side deck: no post-side plan
- No combo or win-rate evidence to validate the ceiling
Critical choke points
- Opponent has no monster on going-first turn 1, so Kaiju Summons are unavailable
- Thunder King (3 copies) as the only three-copy engine card, drawn in a 5-card hand about 34% of the time
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | One or two off-archetype tech/support cards | Hand traps or floodgates in the empty side slots (side deck currently 0 cards) | Adds a post-side plan and reduces dead cards; D12 and D10 are the lowest-scoring dimensions. |
| 2 | One of the mixed sub-archetype Extra Deck lines | A second copy of Radian or Gameciel if it fits the format | Raises Kaiju density and starter consistency (D1, D10, D11). |
Evidence & confidence
- Verified: Legal in master-duel: 40 Main, 15 Extra, 0 Side; Harpie's Feather Duster 1/1 and Maxx C 1/1 (Limited); Exact Kaiju name count 8 of 40 Main Deck cards (14.5%); Card stats (Thunder King 3300 ATK, Radian 2800 ATK, Tri-Brigade Bucephalus II 3500 ATK)
- Inferred: Going-first Kaiju summons are unavailable without an opposing monster; Interaction density is high relative to the rest of the list; Hypergeometric starter odds (0.3376) and searcher odds (≈0.78)
- Provisional: Meta Power and matchup fit, since no dated metagame sample is supplied
- Data gaps: No combos supplied; combo floor, median and ceiling are text-only inference No tournament link; archetype meta-share and per-pilot match record are absent No win-rate telemetry (going-first/second, matchup, brick/starter/OTK rates) Meta Power is Provisional unless a dated metagame sample is supplied Guide snippet is one Vietnamese paragraph with no sections
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