Thunder Dragon Deck #770782 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 20/100 (±8 · Confidence: Low)

• Primary strategy: Toolbox
• Secondary strategies: Control, Fusion
• Format: ocg

Legality

Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).

Identity & game plan

• Win condition: Fusion-based boards (Ojama King, Master of Oz, Gatling Dragon, Dark Blade) and off-archetype beatsticks rather than a Thunder Dragon engine; no reliable single win condition is evidenced.; Direct damage and piercing from Airknight Parshath and Asura Priest, with Reaper on the Nightmare as a direct-attack finisher.
• Turn 1 (going first): Open a Thunder Dragon or a generic searcher (Magician of Faith, Sangan, Sinister Serpent), set up Mirror Force or Torrential Tribute, and convert with a Fusion from the Extra Deck. Confidence is low because no combo boards were supplied.
• Turn 2 (going second): Use Mirror Force, Torrential Tribute, Ring of Destruction, Heavy Storm and Mystical Space Typhoon to clear the opponent's board, then rebuild with Fusion monsters. The forbidden draw spells cannot be used in an Illegal list.
• Recovery: Thunder Dragon, Sinister Serpent and Night Assailant recursion, plus Card Destruction and Upstart Goblin for card flow. Recovery depends on the Limited spells, which are one copy each.
• After siding: Not evaluable: the deck runs zero Side Deck cards, so there is no post-side plan.

Why it scores here

This is an Illegal list: three Forbidden OCG cards (Delinquent Duo, Pot of Greed, Graceful Charity) are run, so it cannot receive a normal Final Contextual score and the result is capped at 20 and labeled theoretical/structural-only. The structural read is weak on the system level: only 3 of 55 Main Deck cards are exact Thunder Dragon names (4.3% purity) and 49 cards are generic, so the namesake engine is thin and the Thunder Dragon core is at 25% per hand (Inferred). Interaction is the strongest area, with broad spell/trap removal and a tributing reset (Mirror Force, Torrential Tribute, Ring of Destruction, Heavy Storm), but it has no hand traps and no side deck to adapt. Fusion access from 15 Extra Deck cards gives a closing route, yet no combo boards are recorded, so floor, median and ceiling are all text-only estimates. Popularity was not credited: the archetype core cards Mulcharmy Fuwalos and Thunder Dragon Colossus are absent, and the score was not built by averaging the card scores.

Dimension scores

How the score was computed

Strategy profile: Balanced. Structural ≈ 42, Going First ≈ 33, Going Second ≈ 38, Meta = provisional, Tournament Reliability ≈ 35. Modifiers: banlist exposure (-8); engine conflicts / no core (-3); no side deck (0); legality cap (0). Final formula: No reliable metagame: 0.80*Structural(42) + 0.20*TournamentReliability(35) = 40.6; modifiers -11 gives 29.6; Illegal legality cap applies, so the reported score is 20 (theoretical/structural-only).

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.25 · 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

• Broad removal and spell/trap interaction (22 removal-text cards) with a reset in Mirror Force and Torrential Tribute.
• Wide Fusion access: 15 Extra Deck Fusions with several closing boards (Ojama King, Master of Oz, Gatling Dragon, Dark Blade).
• Card flow from Card Destruction, Upstart Goblin and Jar of Greed in a compact 55-card Main.

Weaknesses

• Illegal list: Pot of Greed, Graceful Charity and Delinquent Duo are Forbidden in OCG.
• Thin Thunder Dragon core (3 copies) with the core support cards missing; exact-name purity 4.3%.
• No hand traps, no floodgates and no Side Deck, so there is no post-side plan.
• Very high off-archetype and generic card count, which reduces the consistency of the opening hand.

Critical choke points

• The Thunder Dragon engine has only 3 copies, so about 75% of openings have no Thunder Dragon.
• The Limited reset and removal spells (Heavy Storm, Premature Burial, Card Destruction) are one copy each, so losing them removes the recovery route.
• Fusion-dependent closing: the Extra Deck boards need the right Fusion materials, which are not recorded.

Recommended changes

Evidence & confidence

• Verified: Illegal status with three Forbidden OCG cards (Pot of Greed, Graceful Charity, Delinquent Duo).; Main 55, Extra 15, Side 0 against OCG size rules.; Exact-name purity 4.3% and 49 generic copies from archetype_spread.; Thunder Dragon 3 copies; core cards Mulcharmy Fuwalos and Thunder Dragon Colossus absent from the list.
• Inferred: P(>=1 Thunder Dragon in opening 5) ~0.25 from the hypergeometric table.; Consistency and brick estimate from the copy histogram and generic count.; Interaction quality read from removal-text cards.; Fusion closing route from the 15 Extra Deck Fusions.
• Provisional: Meta Power and matchup fit: no tournament link or dated metagame sample.
• Data gaps: No combos supplied: floor, median and ceiling are text-only estimates. No tournament link: archetype meta-share and per-pilot match record absent. No win-rate telemetry (going-first/second, matchup, brick or starter rates). Meta Power is Provisional without a dated metagame sample. Deck title is null; the name is taken from the archetype only.