Citadel Whale
WATER 7

Citadel Whale

  • Archetype:
  • Umi

  • ATK:
  • 2350

  • DEF:
  • 2150

  • View:
  • 3951




If this card is in your hand or GY: You can Tribute 2 WATER monsters; Special Summon this card. You can only use this effect of "Citadel Whale" once per turn. If this card is Special Summoned: You can Set 1 "Sea Stealth Attack" directly from your Deck. Once per turn, when your opponent activates a card or effect that targets 1 WATER monster you control (and no other cards) (Quick Effect): You can negate the activation, and if you do, destroy that card.




 
 
AI Power Analysis
Starter / Combo enablerConfidence: MediumEvaluated Oct 8, 2026
55± 8/ 100
Power Score
Intrinsic 54
Deck 56

Citadel Whale — Power Evaluation

Final Score: 55 ± 8 · Confidence: Medium

  • Intrinsic: 54 · Deck: 56 · Meta: provisional
  • Primary role: Starter / Combo enabler · Secondary: Searcher/Tutor, Negation/Interaction

Why it scores here

Citadel Whale's 2350 ATK and Level 7 body earn almost nothing on their own. Its score comes from the text-verified effect that Sets Sea Stealth Attack from the Deck when it is Special Summoned, a link that the deck sample confirms (Sea Stealth Attack co-occurs in 90.3% of decks), plus a once-per-turn Quick negate that only covers a WATER monster targeted alone. The hand/GY Special Summon costs two WATER monsters, which pulls resource economy and combo conversion down, and no combo boards were supplied, so the combo axis rests on text alone.

Axis scores

Axis Score Evidence
Accessibility 50 Hand/GY Special Summon needs two WATER monsters to Tribute, and the deck sample shows it is run in 103 decks, so it is live but conditional (inferred from text and deck counts; no starter role data).
Combo & Conversion 45 Summon plus a Set of Sea Stealth Attack from the Deck gives a two-piece board from one card, but no combo boards were recorded to confirm the conversion (verified text, partially observed via top partners).
Resource Economy 45 The Set from Deck is a +1 card, offset by a two-monster Tribute cost for a single body, so the net is roughly even (inferred from text).
Effect & Interaction 40 The negate is once per turn and only fires when a WATER monster is targeted with no other cards involved, which is a narrow trigger (verified text).
Material Utility 55 A Level 7 WATER Fish body is a clean Synchro/Xyz material fit, and it stays usable as material even if the effect is negated (inferred from stats and the body rule).
Resilience & Flexibility 50 The negate is limited to WATER targets and once per turn, and the hand/GY route depends on other monsters being on field, so the card is not multi-zone or redundant (inferred from text).
Deck-Building Efficiency 70 Runs 1 to 3 copies with no garnet, and the 22 distinct archetypes show it fits many homes (observed from deck counts; no banlist token, so unlimited is assumed).

Calculation

Weight profile: 0.7 Starter/Combo enabler + 0.3 Searcher/Tutor. Intrinsic ≈ 54, Deck ≈ 56, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck

Strengths

  • Sets Sea Stealth Attack from the Deck on Special Summon, and the deck sample shows the pairing is standard (90.3% co-occurrence)
  • Level 7 WATER Fish body is a useful Synchro/Xyz material
  • Runs across 22 distinct archetypes with 1 to 3 copies and no garnet cost

Weaknesses

  • Hand/GY Special Summon requires Tributing two WATER monsters, which is card-disadvantage on the board
  • Negation only covers a single WATER monster targeted with no other cards in the chain
  • No combo boards recorded, so conversion strength cannot be confirmed

Counters / choke points

  • Targeting a non-WATER monster or targeting alongside other cards, both of which fall outside the negate trigger (inferred from text)
  • Interaction that hits the card itself or the Sea Stealth Attack placement, which the effect does not protect (inferred from text)

Best use

Starter / body that places Sea Stealth Attack from the Deck on Special Summon, with a narrow WATER-protection negate. Decks: Umi, Sea Stealth, Fish, Umi Control, Crystrons.

Evidence & gaps

  • Verified: Set 1 Sea Stealth Attack from the Deck when Special Summoned; Once per turn Quick negate and destroy only when a single WATER monster is targeted with no other cards; Hand/GY Special Summon requires Tributing 2 WATER monsters; Level 7 WATER Fish, 2350 ATK / 2150 DEF
  • Observed: Appears in 103 decks across 22 archetypes, mostly as a 1-copy card (78 decks); Sea Stealth Attack co-occurs in 90.3% of decks
  • Inferred: Primary role is Starter/Combo enabler with a Searcher-like Deck Set; Negate has a narrow trigger, so effect_interaction is situational; Level 7 WATER body is a clean Synchro/Xyz material fit
  • Data gaps: no combos supplied, so combo conversion is text-only inference no guides supplied no banlist token, so unlimited copies are assumed no usage statistics (StatisticsCard), so archetype inclusion is inferred from the deck sample only card text does not say whether the two WATER monsters for the Tribute must be on the field or in hand, so the summon route is partly unclear











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