Spell
NormalFish Sonar
Archetype:
Umi
View:
4488
Add 1 Level 7 or lower monster from your Deck to your hand, that mentions "Umi", or is a WATER Normal Monster, then if "Umi" is on the field, you can Special Summon 1 WATER Normal Monster from your Deck. You can only activate 1 "Fish Sonar" per turn.
Fish Sonar — Power Evaluation
Final Score: 57 ± 6 · Confidence: Medium
- Intrinsic: 54 · Deck: 59.4 · Meta: provisional
- Primary role: Searcher/Tutor · Secondary: Extender
Why it scores here
Fish Sonar converts reliably into one Level 7 or lower Umi-mentioning or WATER Normal monster, and can add a second WATER Normal monster from the Deck when Umi is on the field, which is the source of its value. Its high deck count (400 of 400 decks, 3 copies in 352) and 47 distinct archetypes confirm it is live and cheap to run, but that frequency does not raise the score (guardrail 3). The lack of recorded combos caps combo_conversion, and the absence of any interaction or material role keeps effect_interaction and material_utility near the floor. The 2-for-1 at best and the once-per-turn restriction keep it a supporting searcher, not a boss-level piece.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 80 | Three copies run in 352 of 400 decks and the search targets a broad Umi or WATER Normal pool, so it is usually reachable (observed/verified). |
| Combo & Conversion | 40 | No combos are recorded, so conversion is text-only: one search plus a conditional Normal summon, with no evidence of a further payoff (inferred). |
| Resource Economy | 55 | Search is 1-for-1 and the conditional Special Summon from the Deck adds a body only when Umi is on the field, so the advantage is at most +1 (verified). |
| Effect & Interaction | 3 | The card has no negation, removal, or disruption text (verified). |
| Material Utility | 5 | As a Spell it is never material itself; its searched and summoned WATER Normal monsters supply material, which is indirect (verified/inferred). |
| Resilience & Flexibility | 45 | Limited to one activation per turn and vulnerable as a Spell, but it is used across 47 archetypes and three copies give redundancy (observed/inferred). |
| Deck-Building Efficiency | 70 | A single Spell slot with no garnet or lock, run at three copies in most decks, though its Umi/WATER reach narrows splashing (observed). |
Calculation
Weight profile: 0.7 Searcher + 0.3 Extender. Intrinsic ≈ 54, Deck ≈ 59.4, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Reliable three-copy inclusion across 400 recent decks
- Cheap, clean slot with no garnet or lock
- Searches a broad Umi/WATER Normal pool and adds a conditional second body
Weaknesses
- Single-card, once-per-turn search with at most +1 advantage
- No interaction or material value of its own
- No recorded combo evidence to show conversion beyond the text
Counters / choke points
- Generic opposing hand traps or spell-negation are a plausible inference, but no counter data is supplied
Best use
Searcher providing the starter body and a conditional Normal summon. Decks: Umi, Shark, Umi Control, Phantasm Spiral. Suggested copies: 3.
Evidence & gaps
- Verified: Searches one Level 7 or lower monster that mentions Umi or is a WATER Normal monster; Conditional Special Summon of a WATER Normal monster when Umi is on the field; Once per turn restriction; Three copies in 352 of 400 decks
- Observed: Umi archetype inclusion at 57% and Phantasm Spiral at 80% in usage statistics; Strong partner overlap with Sea Stealth Attack (82%) and Kairyu-Shin (81%)
- Inferred: Accessibility is high because the search target pool is broad; Resilience is moderate because it is a Spell that can be interrupted
- Data gaps: no combos supplied, so combo conversion is text-only inference no banlist token, so 3 copies (unlimited) is assumed no counter or interaction data supplied






