EARTH
1Key Mouse
ATK:
100
DEF:
100
View:
3002
When this card is destroyed by battle and sent to the Graveyard, you can add 1 Level 3 or lower Beast-Type monster from your Deck to your hand.
Key Mouse — Power Evaluation
Final Score: 53 ± 8 · Confidence: Medium
- Intrinsic: 54 · Deck: 53 · Meta: provisional
- Primary role: Searcher/Tutor · Secondary: Material body
Why it scores here
Key Mouse is a Level 1 Tuner whose only real value is its graveyard trigger: when it is destroyed by battle, it adds one Level 3 or lower Beast from the Deck to hand, which converts a dead body into a card. The score comes from that card-for-card recovery, its Tuner and Beast typing, and a cheap, unrestricted slot used in 27 decks across 9 archetypes. The 100 ATK earns nothing, and the trigger requires battle destruction, so the card is hard to use deliberately, which keeps accessibility and resilience low. The evidence has no recorded combo boards, so combo conversion stays low and rests on the card text alone.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 40 | Usually reached through a Level 1 body that is only reliably sent to the GY by battle destruction, and the evidence shows no starter or searched appearances (observed, verified text). |
| Combo & Conversion | 30 | The text gives a single search after battle death, a one-for-one conversion with no recorded combo boards to confirm more (inferred). |
| Resource Economy | 65 | Battle death plus the search leaves a net card gained, since the search replaces the body that was lost (inferred from text). |
| Effect & Interaction | 5 | No negation, removal, or hand-trap reach in the text or role tags (verified). |
| Material Utility | 60 | Tuner type and Level 1 are verified, so the body still works as Synchro material even when its effect is negated, though the Level 1 is narrow (verified text, inferred use). |
| Resilience & Flexibility | 35 | A 100/100 body dies to almost any attack, and the trigger never fires from effect destruction, so the card has little time on board to matter (verified text, inferred). |
| Deck-Building Efficiency | 85 | No banlist limit is supplied, the typical copy count is 1–2, and it fits in any Beast-leaning deck with no restriction (observed, decks evidence). |
Calculation
Weight profile: 0.7 Searcher/Tutor + 0.3 Material body. Intrinsic ≈ 54, Deck ≈ 53, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Converts a battle-destroyed body into a Level 3-or-lower Beast search, giving card-for-card recovery
- Verified Tuner and Level 1 body that stays useful as material even if the effect is negated
- Cheap and unrestricted, with 27 decks across 9 archetypes and 1.33 average copies per deck
- Steady partner ties to Melffy and Tri-Brigade Beast support (observed)
Weaknesses
- The trigger needs battle destruction, so it is not a reliable starter or searcher on demand
- No recorded combo boards, so its conversion value rests on text alone
- Dies to nearly any attack at 100 ATK and offers no interaction
- Narrow Level 1 Tuner role with little board presence
Counters / choke points
- Any effect-based destruction or banish, since battle destruction is required to trigger
- Monsters that attack and simply out-stat it without battle exchange (inferred)
Best use
Level 1 Tuner body with a battle-death Beast search. Decks: Beast-type support decks such as Melffy, Subterror, Nimble, and Naturia.
Evidence & gaps
- Verified: Tuner Monster, Level 1, EARTH Beast, 100/100 (card fields); GY trigger: battle-destroyed, adds a Level 3 or lower Beast from Deck to hand (card text); Legal in TCG, OCG, MasterDuel, DuelLinks; no banlist token supplied
- Observed: In 27 recent decks, 19 Master Duel and 8 other gameplay type 7, average 1.33 copies; Top partners include Melffy and Beast support monsters at 51–67% of decks; Usage statistics show 60% inclusion in Subterror and Nimble at typically 2 copies; Zero recorded combo appearances
- Inferred: The search is practical only when the card is destroyed by battle, so it is not a reliable starter; Recovers a card from a battle death, giving a net gain
- Data gaps: no combos supplied, so combo conversion is text-only inference no guides supplied no banlist token, assumed 3 copies (unlimited) no Synchro or Extra Deck routes in the evidence