Trap
NormalPoseidon Wave
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3555
When an opponent's monster declares an attack: Target the attacking monster; negate the attack, and if you do, inflict 800 damage to your opponent for each Fish, Sea Serpent, or Aqua-Type monster you control.
Poseidon Wave — Power Evaluation
Final Score: 35 ± 7 · Confidence: Medium
- Intrinsic: 37 · Deck: 38 · Meta: provisional
- Primary role: Removal/Negation · Secondary: Utility
Why it scores here
Poseidon Wave is a narrow water-tribal attack negate that earns its niche through the combination of a clean attack-negation and potentially meaningful burn damage (800 per Fish/Sea Serpent/Aqua monster) in dedicated water decks like Shark and Atlantean. It scores in the 35 range because attack negation without permanent threat removal is a reactive, one-time defensive play, the card is a pure -1 with no card-advantage return, and it is completely inert outside water-type decks. High ATK/DEF did not factor into the score; the card has neither and is a Normal Trap.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 30 | Normal Trap must be set a full turn before use and triggers only on opponent attack declaration, with no known searcher identified in the evidence; this multi-step requirement limits live access (inferred). |
| Combo & Conversion | 18 | Zero appearances in any recorded combo board and no effect that advances the user's own board state; this card does not build or extend combos (verified). |
| Resource Economy | 22 | One Trap activation negating one attack with burn damage but no replacement draw or recursive effect makes this a pure net -1 in card advantage (inferred). |
| Effect & Interaction | 50 | Negates an attacking monster's attack and burns 800 per Fish/Sea Serpent/Aqua monster controlled — up to 2400+ in a full Shark board — but does not remove the threat permanently (inferred, supported by Shark/Atlantean deck partners in deck data). |
| Material Utility | 5 | Normal Trap Card; has no level, no body, and cannot function as Fusion/Synchro/Xyz/Link material (verified). |
| Resilience & Flexibility | 28 | Reactive only on opponent's attack step; useless going first and irrelevant if the opponent opts not to attack, and the burn rider demands field presence of water-type monsters (inferred). |
| Deck-Building Efficiency | 42 | Fits naturally into Shark, Atlantean, and Deep Sea decks at 1-2 copies (avg 1.44 across 9 decks) with no garnet issue within those homes, though it is an unplayable brick outside water-type strategies (observed). |
Calculation
Weight profile: 0.7 Removal/Negation + 0.3 Utility. Intrinsic ≈ 37, Deck ≈ 38, Meta = provisional. Modifiers: Water-type restriction (-3). Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Negates an attack completely, protecting life points in critical moments
- Burn damage scales with water-type monsters on field (800 per Fish/Sea Serpent/Aqua), potentially dealing 2400+ in a full Shark board
- Fits cleanly into Shark, Atlantean, and Deep Sea decks without additional deckbuilding cost
- No once-per-turn restriction in text allows multiple activations if multiple copies are set
Weaknesses
- Pure -1 card advantage; no replacement draw or graveyard effect
- Must be set a full turn before activation — vulnerable to backrow removal
- Negates the attack but leaves the monster on the field, providing no permanent solution to the threat
- Completely inert outside water-type strategies
- Opponent can choose not to attack, rendering the card useless
Counters / choke points
- Mystical Space Typhoon / Twin Twisters / Cosmic Cyclone destroy it before the attack window
- Opponent choosing not to attack when backrow is present
- Effect negation (e.g., Ash Blossom is not relevant here, but Trap negation cards like Dark Bribe) preventing resolution
Best use
Defensive trap that negates attacks and converts water-type field presence into burn damage pressure. Decks: Shark, Atlantean, Deep Sea, Water. Suggested copies: 1.
Evidence & gaps
- Verified: Normal Trap Card requiring opponent attack declaration to activate (card text); Effect: negate the attack and deal 800 damage per Fish/Sea Serpent/Aqua monster controlled (card text); Appears in 9 decks across Shark, Atlantean, and Deep Sea archetypes (deck data); Zero combo board appearances (combo data)
- Observed: Consistently run at 1-2 copies (avg 1.44) in water-type decks (deck data); Top partners are all water-type monsters and water support cards including Salvage (77.8%) and Bahamut Shark (66.7%) (deck data); Played across two gameplay types (55.6% type 7, 44.4% type 4) (deck data)
- Inferred: No dedicated searcher identified in the evidence; drawn naturally or set from hand; Burn damage ceiling of 2400+ requires at minimum 3 Fish/Sea Serpent/Aqua monsters on field simultaneously; Attack negation without removal leaves the threat intact for subsequent turns
- Data gaps: No combos supplied — combo conversion is text-only inference No guides supplied No banlist token — assumed 3 copies (unlimited) No usage statistics (StatisticsCard) — archetype inclusion % inferred from deck sample only No information on whether the card is searchable within the Shark or Atlantean engine