Trap
NormalXyz Poseidon Splash
Archetype:
Xyz
View:
1909
If you control an Xyz Monster that has an Xyz Monster as material: Declare 1 monster Attribute on the field; destroy all monsters on the field with that Attribute, except monsters equipped with an Equip Spell. You can banish this card from your GY and detach 1 material from a monster you control; Special Summon 1 Fish, Sea Serpent, or Aqua monster from your GY to either field. You can only use 1 "Xyz Poseidon Splash" effect per turn, and only once that turn.
Xyz Poseidon Splash — Power Evaluation
Final Score: 56 ± 6 · Confidence: Medium
- Intrinsic: 55.6 · Deck: 57.1 · Meta: provisional
- Primary role: Board breaker / Going-second · Secondary: Recovery/Recursion
Why it scores here
The card is a set trap whose main effect declares one Attribute and destroys every monster of that Attribute on the field, including the player's own monsters unless they are equipped with an Equip Spell. Its activation needs an Xyz Monster that has an Xyz Monster as material, which narrows when it is live. The GY effect banishes itself and detaches one material to Special Summon a Fish, Sea Serpent, or Aqua from the GY, giving modest recursion. It is not scored for its ATK-less trap body, which cannot be material, and the 63-deck presence is treated as accessibility evidence rather than proof of raw strength.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 55 | 63 of 63 sampled decks run it at about one copy each, concentrated in Shark gameplay, but it is a set trap gated by an Xyz-on-Xyz board (observed + inferred). |
| Combo & Conversion | 45 | No recorded combos exist, so conversion rests on the text: a board wipe plus a GY revive of an Aqua/Fish/Sea Serpent (inferred). |
| Resource Economy | 55 | The sweep is symmetric and can hit the player's own monsters, while the GY revive banishes itself and detaches material for one body back (verified text, inferred net). |
| Effect & Interaction | 60 | Attribute-declared mass destruction is a strong sweep when the opponent's board shares one Attribute, but it is a situational answer rather than a flexible one (verified text + inferred). |
| Material Utility | 5 | A trap card cannot be used as material and provides no level, attribute, or name body value (verified card type). |
| Resilience & Flexibility | 45 | Its activation is exposed to negation and its GY effect can be answered by GY-based responses, though both effects are once-per-turn and the sweep is usable across turns (verified text + inferred). |
| Deck-Building Efficiency | 70 | Typically one copy per deck, no garnet or lock restriction, and the 1.08 average copy count shows a cheap single-slot cost (observed). |
Calculation
Weight profile: 0.7 Board breaker / Going-second + 0.3 Recovery/Recursion. Intrinsic ≈ 55.6, Deck ≈ 57.1, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Mass removal by Attribute can clear an opponent's single-Attribute board from a set position
- Recursion from GY: banish itself to revive an Aqua, Fish, or Sea Serpent body
- Single-copy, low-slot cost, no garnet restriction
Weaknesses
- Gated on an Xyz Monster that has an Xyz Monster as material
- Hits the player's own monsters unless they are equipped with an Equip Spell
- Once per turn for each effect, and the GY effect costs a material
Counters / choke points
- Negation of the trap activation
- Responses to the GY effect while it is being activated from the graveyard
Best use
Board breaker / Going-second, with GY recursion as a secondary use. Decks: Shark (archetype 842 / 794), Umi (archetype 806). Suggested copies: 1.
Evidence & gaps
- Verified: Attribute-declared destruction of all monsters on the field, except Equip-protected monsters; GY effect: banish this card and detach 1 material to Special Summon a Fish, Sea Serpent, or Aqua from the GY; Each effect is once per turn and the sweep needs an Xyz-on-Xyz condition; Card type is Trap, so it cannot be material
- Observed: 63 sampled decks, 60.3% Gameplay 7 and 39.7% Gameplay 4, 59 of 63 at one copy; Top partner Abyss Shark co-occurs in 88.9% of decks
- Inferred: The sweep is a situational answer that works best against a single-Attribute opposing board; The GY revive gives a net body in exchange for the material cost
- Data gaps: no combos supplied, so combo conversion is text-only inference no guides supplied no banlist token, so copies assumed unlimited (3) no usage statistics (StatisticsCard), so archetype inclusion % is inferred from the deck sample only no card rulings available for the Xyz-on-Xyz condition or Attribute-declaration edge cases