Herald Deck #762652 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 36/100 (±8 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Stun, Tempo
• Format: master-duel

Legality

Main 40 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).

Identity & game plan

• Win condition: Link and Xyz pressure from Spright Level 2 monsters into Gigantic Spright, Spright Elf and Spright Sprind boards; Hand-trap-supported grind using Ash Blossom, Infinite Impermanence, Maxx C and Nibiru to stall the opponent's first board
• Turn 1 (going first): Open Spright Starter or a Level 2 Spright monster, use Spright Jet or Spright Blue to search, then Link or Xyz into a 2-monster board; hold Ash Blossom and Infinite Impermanence for the opponent's response
• Turn 2 (going second): Hold Ash Blossom, Maxx C, Infinite Impermanence and Nibiru with the six-card hand to interrupt the opponent's first summon chain, then rebuild through Spright Red and Spright Carrot
• Recovery: Recover from a disrupted opening through Level 2 redundancy (Spright Red, Spright Carrot, Nimble Beaver, Deep Sea Diva) and the Spright Jet and Spright Blue searches
• After siding: Not evaluable: the deck runs 0 side cards, so no best-of-3 plan exists

Why it scores here

The deck is a Spright-based Level 2 engine with many redundant Level 2 starters (Spright Red, Spright Carrot, Spright Blue, Spright Jet, Nimble Beaver and Deep Sea Diva), which gives it a reasonable chance of a live engine on turn 1 or 2 (Inferred from hypergeometric odds of about 0.34 per 3-copy card in a 5-card hand). Its interaction package (Ash Blossom, Infinite Impermanence, Maxx C, Nibiru, Spright Red and Spright Carrot negation text) is broad and gives the deck a real end-board and going-second answer (D7 and D8). Its ceiling and median output cannot be measured because no recorded boards exist, so D3 and D4 are text-only inferences, and the deck has no side deck and no tournament data, which keeps D12 and D13 low. The legality failure is decisive: Called by the Grave is Forbidden in Master Duel and the deck runs one copy, so the deck is capped and the score is theoretical/structural only. The score comes from the system's consistency, interaction and redundancy, not from averaging card scores, and not from the Herald label, which only one card carries (the real engine is Spright).

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 48, Going First ≈ 50, Going Second ≈ 52, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: Illegal list (Forbidden card run) (-10). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional); Structural 48.2, TR 40, pre-modifier 46.4, then -10 illegal-deck modifier to 36

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

• Redundant Level 2 engine (Spright Red, Carrot, Blue, Jet, Pixies) keeps the deck live on many hands
• Broad interaction package: Ash Blossom, Infinite Impermanence, Maxx C, Nibiru and Crossout Designator
• Compact Spright core with a clear Link and Xyz payoff set

Weaknesses

• Illegal as built: Called by the Grave is Forbidden and over the copy limit
• Zero side deck, so no post-side adaptability
• Herald label does not match the deck: only one Herald card, with Spright as the real engine
• Extra Deck mixes unrelated Link, Xyz and Herald cards with no shared engine

Critical choke points

• Spright Starter or a Level 2 monster in the opening hand (about one-third of 5-card hands contain any given 3-copy card)
• Single Called by the Grave slot is illegal, so the deck must be rebuilt before it can be played

Recommended changes

Evidence & confidence

• Verified: Deck legality: 40 Main, 15 Extra, 0 Side; Called by the Grave Forbidden with 1 copy run (Illegal); Archetype spread: Spright 25 copies, Herald 1 copy, generic 23, Nimble 5, C 1; Role tags: 8 hand traps, 10 tech, 6 searcher text, 14 negation text, 13 removal text
• Inferred: Starter access probability about 0.34 per 3-copy card in a 5-card hand; Interaction breadth from negation and removal text across 14 and 13 cards; Going-first and going-second plans from card text only
• Provisional: Format fit and meta share (no tournament link, no dated meta sample); Post-side plan (no side deck)
• 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 absent No win-rate telemetry: going-first and going-second, matchup, brick and starter rates are Inferred or Unknown Meta Power is provisional unless a dated metagame sample is supplied Deck title is null, and the Herald label does not match the Spright-dominant list