Bystial/Byssted Deck #770624 — Yu-Gi-Oh! TCG
55 Main, 15 Extra, incl. K9-17 Izuna x3, Mulcharmy Fuwalos x3, Mulcharmy Meowls x3. Created Oct 21, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 10/21/2026
Main Deck (55)
- Bystial Druiswurm x1
- Bystial Magnamhut x1
- Droll & Lock Bird x1
- K9-17 Izuna x3
- K9-66a Jokul x1
- K9-66b Lantern x2
- K9-ØØ Lupis x1
- Mulcharmy Fuwalos x3
- Mulcharmy Meowls x3
- Mulcharmy Purulia x3
- Retaliating "C" x3
- Vanquish Soul Caesar Valius x1
- Vanquish Soul Dr. Mad Love x3
- Vanquish Soul Heavy Borger x2
- Vanquish Soul Hollie Sue x1
- Vanquish Soul Jiaolong x2
- Vanquish Soul Razen x3
- Ash Blossom & Joyous Spring x3
- Ghost Belle & Haunted Mansion x3
- "A Case for K9" x1
- Dimensional Fissure x3
- K9-X Forced Release x1
- Pot of Prosperity x1
- Reinforcement of the Army x1
- Stake your Soul! x3
- Vanquish Soul, Start! x1
- Solemn Judgment x1
- Solemn Strike x2
- Vanquish Soul Snow Devil x1
Extra Deck (15)
- Rock of the Vanquisher x2
- S:P Little Knight x1
- CXyz N.As.Ch. Knight x1
- Divine Arsenal AA-ZEUS - Sky Thunder x1
- K9-17 "Ripper" x2
- K9-66X "Jacks" x1
- K9-X "Werewolf" x1
- N.As.H. Knight x1
- Number 104: Masquerade x1
- Number C104: Umbral Horror Masquerade x1
- Super Starslayer TY-PHON - Sky Crisis x1
- Vallon, the Super Psy Skyblaster x1
- Vanquish Soul Rocks x1
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Deck — Deck Power Evaluation
Final Contextual Deck Power: 20/100 (±10 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 51 |
| Going First | 50 |
| Going Second | 54 |
| Meta Power | provisional |
| Tournament Reliability | 42 |
- Primary strategy: Midrange
- Secondary strategies: Toolbox, Stun
- Format: tcg
Legality
Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).
Identity & game plan
- Win condition: Xyz and Link boss monsters (K9-X Werewolf, Super Starslayer TY-PHON, Divine Arsenal AA-ZEUS, Caesar Valius, K9-66X Jacks) reached through Vanquish Soul and K9 search and special-summon lines; Bystial Druiswurm and Bystial Magnamhut banish-and-summon pressure from hand
- Turn 1 (going first): Search with Vanquish Soul or K9 monsters, Normal Summon a 2-card Vanquish Soul or K9 bootstrap, and convert into a Level 5 Xyz; hand traps (Ash Blossom, Ghost Belle, Droll and Lock Bird) are held up against the opponent's first engine.
- Turn 2 (going second): Hold Ash Blossom, Ghost Belle, Solemn Strike and Solemn Judgment for the opponent's first summon or search, then rebuild through Mulcharmy draws and the Vanquish Soul hand-revealing special summons.
- Recovery: Mulcharmy monsters draw when the field is empty, and Vanquish Soul, Start! and the Vanquish Soul Heavy Borger / Caesar Valius recursion replace lost board presence; no quantified recovery rate is available.
- After siding: No side deck is registered (side_count 0), so there is no post-side plan in this list; a best-of-3 list would need one.
Why it scores here
This list is Illegal: three cards exceed their copy limits (Ash Blossom at 3 vs 2, Vanquish Soul Razen at 3 vs 1, K9-17 Izuna at 3 vs 2), so the score is a theoretical, structural-only read capped at 20 and is not a normal Final Contextual score. Structurally the deck is a three-archetype Midrange build (Vanquish Soul, K9, Mulcharmy) that searches heavily (19 searcher-text cards, about 0.89 chance of at least one searcher in an opening 5) and carries 7 hand traps plus Solemn and Droll interaction, which earns the interaction and resilience dimensions. Consistency is held back because the archetype core is only about 0.39 likely in an opening 5, the deck is spread over 29 distinct main-deck cards with 70 off-exact-archetype copies, and Dimensional Fissure conflicts with the deck's own Xyz and graveyard lines. No combo, guide or tournament data exists, so floor, median and ceiling are text-only inference, and the card power scores were not averaged into this result.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 55 | P(at least 1 searcher in opening 5) about 0.89; archetype core group P(open at least one of 5) about 0.39; three engines split across sub-archetypes (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 50 | 14 singletons and 11 triple-copies; brick risk from mixed sub-archetypes and several reveal-dependent cards (Inferred) |
| D3 | Combo Conversion & Ceiling | 45 | No parseable boards, so ceiling is text-only; best candidates are Xyz bosses reached through search (Inferred) |
| D4 | Combo Floor & Median Output | 40 | No recorded boards; median is text-only and assumed below ceiling (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 58 | 7 hand traps, 3 Ash Blossom, 3 Ghost Belle and 3 Solemn-style answers give multiple independent answers (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 55 | Searcher density plus Pot of Prosperity and Stake your Soul! for recovery; no resource telemetry (Inferred) |
| D7 | End-Board & Interaction Quality | 62 | Interaction density from text: 9 negation-text and 16 removal-text cards across the main deck (Inferred) |
| D8 | Going-Second & Board-Breaking Power | 60 | Hand-trap group P(at least 1 in 6 going second) about 0.58; Caesar Valius, Werewolf and ZEUS for board breaking (Inferred) |
| D9 | Offensive Pressure & Closing Power | 62 | Boss ATK of 2900 to 3300 across several Xyz and Link monsters; closing power is not measured (Inferred) |
| D10 | Main Deck Efficiency & Flexibility | 45 | 55 main cards across 29 distinct names with 70 off-exact-archetype copies and 3 copies of 11 cards (Verified composition, Inferred efficiency) |
| D11 | Extra Deck Efficiency & Coverage | 45 | 15 Extra Deck cards with 12 Xyz and 3 Link across several archetypes; mostly single copies (Verified composition, Inferred coverage) |
| D12 | Side Deck Adaptability | 10 | side_count is 0, so there is no post-side plan (Verified) |
| D13 | Matchup Coverage & Format Fit | 50 | No tournament link and no dated metagame sample; archetype share unavailable (Provisional) |
| D14 | Pilotability & Error Tolerance | 40 | Many reveal and conditional summon decisions across three engines; high error surface (Inferred) |
How the score was computed
Strategy profile: Midrange. Structural ≈ 51, Going First ≈ 50, Going Second ≈ 54, Meta = provisional, Tournament Reliability ≈ 42. Modifiers: Legality cap (Illegal) (-29); Dimensional Fissure engine conflict (0). Final formula: Theoretical structural-only read for an Illegal list: Structural 51 and Tournament Reliability 42 give 0.80*51 + 0.20*42 = 49 before the legality cap; the final is capped at 20. Meta Power is null (provisional).
Probability & combo summary
- Opening a starter: P(≥1) ≈ — · 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
- Heavy search density (19 searcher-text cards)
- Multiple hand traps and Solemn-style interaction in the 6-card going-second hand
- Several 2900 to 3300 ATK Xyz and Link bosses that can close a board
Weaknesses
- Illegal copy counts on three cards
- No side deck
- Three archetypes with thin core (5 copies of archetype core)
- Dimensional Fissure conflicts with the deck's own GY and Xyz lines
Critical choke points
- Single-copy Vanquish Soul Hollie Sue, Vanquish Soul Razen (over limit) and Bystial bosses are the only route to some lines
- Opening-hand dependence on a Level 5 bootstrap for K9 and Vanquish Soul
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | 1 Ash Blossom & Joyous Spring, 2 Vanquish Soul Razen, 1 K9-17 Izuna (reduce to legal copy limits) | Cards that fill the 4 freed slots from the deck's own engine (for example, a second copy of a single-copy Bystial or Vanquish Soul monster), within copy limits | Restores legality; the deck cannot receive a normal Final score while illegal. |
| 2 | 3 Dimensional Fissure | A side-deck-friendly floodgate or hand trap compatible with the Xyz and GY lines | Banishes the deck's own Xyz materials and GY-based recursion. |
| 3 | A side deck of up to 15 cards | A best-of-3 list has no post-side plan with side_count 0. |
Evidence & confidence
- Verified: Legality: Illegal, with three copy-limit violations (Ash Blossom 3 of 2, Vanquish Soul Razen 3 of 1, K9-17 Izuna 3 of 2); Main 55 and Extra 15 are within the TCG size rules; side_count is 0; Card text and banlist status for each listed card; Archetype spread and role-tag counts from the composition block
- Observed: Usage: Ash Blossom and Bystial Magnamhut are core (100%) for this archetype; the list runs 42.9 percent of the 7 core cards
- Inferred: Hypergeometric draw estimates (searcher about 0.89, archetype core about 0.39, hand trap about 0.58 going second); Structural dimension scores and the Midrange profile; Interaction and resilience credit from text-only role hints; Dimensional Fissure conflict with GY and Xyz lines
- Provisional: Meta Power and matchup fit (D13): no dated metagame sample and no tournament link
- Data gaps: No combos supplied: combo 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, matchups, brick or starter rates Meta Power is provisional without a dated metagame sample No side deck (side_count 0): post-side scoring is not possible
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