Trap
ContinuousRare Metalmorph
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Activate this card by targeting 1 Machine-Type monster on the field; it gains 500 ATK. Once, negate a Spell effect that targets that monster. When that monster leaves the field, destroy this card.
51± 5/ 100
Power Score
Intrinsic
50
Deck
51
Rare Metalmorph — Power Evaluation
Final Score: 51 ± 5 · Confidence: Medium
- Intrinsic: 50 · Deck: 51 · Meta: provisional
- Primary role: Removal/Negation · Secondary: Utility
Why it scores here
Rare Metalmorph provides situational Spell negation for Machine-Type monsters, negating one targeting Spell per turn while the protected monster remains on field. The card sees consistent inclusion across 36 decks spanning 15 distinct archetypes (primarily Red-Eyes, Armed Dragon, and machine-support builds), confirming modest utility in the right homes. However, it is strictly reactive, generates no card advantage, and is destroyed if the protected monster leaves—making it a viable tech option rather than a power piece. The negation is flexible but conditional on the opponent's choice of Spells, capping its ceiling as defensive tech.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 45 | A draw-dependent tech card with no self-search that appears in 36 decks, indicating moderate playability in machine-focused archetypes but not broad accessibility (observed) |
| Combo & Conversion | 15 | The card is reactive and generates zero board advantage or combo extension on its own, confirmed by zero combo appearances in the data (verified) |
| Resource Economy | 38 | Activation requires targeting an existing Machine-Type monster (moderate cost), provides one negation per turn (value), and is destroyed when the protected monster leaves (drawback), yielding roughly neutral resource exchange (verified) |
| Effect & Interaction | 55 | Negates one Spell effect targeting the protected monster per turn cycle, offering flexible disruption against targeting effects but remaining situational and conditional on opponent's play (verified) |
| Material Utility | 0 | Continuous Trap cards cannot serve as Synchro, Xyz, or Link material, and this card bears no special material-use rules, rendering it inert as monster material when effect-negated (verified) |
| Resilience & Flexibility | 40 | Remains on field only while the protected monster controls it, is destroyed if the monster leaves, and has no recovery or recursion, providing conditional but vulnerable protection (verified) |
| Deck-Building Efficiency | 63 | A single-card tech slot with no locking or garnet issues that runs cleanly at 1–2 copies per deck, particularly in machine-heavy builds with strong synergy to Machine Assembly Line and Heavy Mech Support Platform (observed) |
Calculation
Weight profile: Primary role Removal/Negation. Intrinsic ≈ 50, Deck ≈ 51, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Flexible negation of any Spell effect targeting the protected monster
- Consistent inclusion across 15 distinct archetypes, primarily machine-focused
- Clean tech slot with minimal garnet or locking impact
- Strong synergy with machine-support staples (Machine Assembly Line 38.9%, Heavy Mech Support Platform 36.1%)
Weaknesses
- Situational effect that only triggers when opponent plays Spells targeting your monster
- Once-per-turn negation severely limits disruption frequency and ceiling
- Strictly dependent on maintaining a Machine-Type monster on field
- Destroyed when the protected monster leaves, creating inherent resource vulnerability
- Does not generate card advantage or combo extension
Counters / choke points
- Spell effects that do not target specific monsters bypass the negation entirely
- Monster removal (destruction, bouncing, banishing) destroys both the protected monster and this card
- Trap removal effects (Cosmic Cyclone, Twin Twisters, Harpie's Feather Duster)
Best use
Spell effect negation and protection for Machine-Type monsters. Decks: Red-Eyes, Armed Dragon, Machine, Invoked, Fur Hire. Suggested copies: 1.
Evidence & gaps
- Verified: Card text describes activation targeting one Machine-Type monster, grants +500 ATK, negates one Spell targeting that monster once per turn, and is destroyed when the monster leaves (from card description); 36 decks run Rare Metalmorph across 15 distinct archetypes; Average 1.22 copies per deck (distribution: 29 decks with 1, 6 with 2, 1 with 3); Top partners are Machine support cards: Machine Assembly Line (38.9%), Heavy Mech Support Platform (36.1%), Union cards (30.6%); Continuous Trap cards cannot serve as Synchro, Xyz, or Link material under standard rules; Role identified as Removal/Negation from card text negation effect
- Observed: 44.4% of decks run this card in gameplay type 7; 22.2% in type 10; 30.6% co-appearance with generic staples: Ash Blossom, Monster Reborn, Maxx C, Called by the Grave; No combo appearances recorded (0 appearances across all combo data); Deck sample spans 15 distinct archetypes, indicating multi-home playability
- Inferred: Accessibility score of 45 inferred from draw-dependent tech status and lack of built-in search or tutor routes; GenericUtility score of 70 based on 15-archetype diversity with machine-type specialization limiting cross-home portability; RulesReliability of 75 based on clear card text with standard once-per-turn negation phrasing and no reported ruling complexities; DeckSynergy of 50 inferred from moderate deck fit (36 decks, multiple homes) without combo centrality data; DeckResilience of 55 inferred from typical 1-copy inclusion and non-critical role (no deck crashes if absent)
- Data gaps: No combos supplied—unable to measure combo conversion, power-index scaling, or board-build potential No guides supplied—no human context on deck-building priorities or meta roles No usage statistics (StatisticsCard)—archetype inclusion % inferred from 36-deck sample only; long-term consistency unknown No banlist token—assumed 3 copies (unlimited); actual format ban status and historical trends unknown No ruling clarifications for edge cases (e.g., interaction with targeting redirects, spell-speed timing)