Trap
ContinuousDoppelganger
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When you take damage from the effect of a monster your opponent controls, inflict the same amount of damage to your opponent.
Doppelganger — Power Evaluation
Final Score: 42 ± 8 · Confidence: Medium
- Intrinsic: 42.5 · Deck: 41 · Meta: provisional
- Primary role: Negation/Interaction
Why it scores here
Doppelganger is a narrow reactive Continuous Trap. Its only output is to reflect damage taken from an opponent's monster effect back to the opponent, so it converts one specific type of damage into an equal amount of counter-damage and does nothing against battle damage, non-monster damage, or proactive plays. The evidence shows 7 decks running one copy each across 4 archetypes, which confirms it is a practical pick, but no recorded boards or guides show it converting into a winning line, so the score stays in the low 40s. High stats, rarity, and the 2,736 page views earned no points.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 35 | A set trap that is never searched, and the 7-deck sample runs one copy each, so it is reachable only through normal draws (inferred; 0 searcher or starter appearances in combo data). |
| Combo & Conversion | 25 | Text converts one monster-effect damage event into equal damage to the opponent, with no board or follow-up; no recorded combos exist (inferred from text). |
| Resource Economy | 30 | A one-for-one reflection with no card advantage or refuel; the damage it returns does not generate value beyond the trade (verified from card text). |
| Effect & Interaction | 35 | Real but narrow interaction that only triggers on monster-effect damage, which is a trigger condition the opponent can avoid (verified from card text; deck-level use is observed in 7 decks). |
| Material Utility | 5 | A Trap card cannot be used as Xyz, Synchro, Fusion, Link, or any other material (verified from card frame trap). |
| Resilience & Flexibility | 45 | Continuous, so it stays on the field across turns, but a face-down trap is exposed to backrow removal and to opponents who stop the monster effect (inferred from text and card type). |
| Deck-Building Efficiency | 65 | One copy per deck with no garnet or lock; it takes one slot of a trap-heavy deck, so cost is low but the slot is not free (observed in 7 decks at 1 copy each). |
Calculation
Weight profile: Primary role Negation/Interaction weights only; no secondary blend. Intrinsic ≈ 42.5, Deck ≈ 41, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Converts an opponent's monster-effect damage into equal counter-damage, which punishes effect-based damage lines
- Continuous, so it stays on the field across turns once set
- Clean deckbuilding: one copy per deck, no garnet or lock
- Practical across 4 archetypes in the 7-deck sample
Weaknesses
- Trigger is narrow: it only answers damage from a monster's effect, not battle damage or other damage
- Not searchable and not a starter, so accessibility depends on drawing it
- Cannot be used as material
- No recorded combo or board presence, so combo conversion is unproven
Counters / choke points
- Backrow removal or destruction of the face-down trap (inferred from card type)
- Opponent avoiding monster-effect damage altogether (inferred from trigger condition)
Best use
Situational reactive trap against monster-effect damage in a deck with backrow room. Decks: Dark Magician, Harpie, Eyes Restrict, Rose Dragon. Suggested copies: 1.
Evidence & gaps
- Verified: Card text: reflects damage from an opponent's monster effect back to the opponent; Frame type is trap, so it cannot be material; 7 decks run exactly 1 copy each across 4 archetypes
- Observed: Top partners co-occur in 6 of 7 decks (85.7%), reflecting a shared Illusion cluster in a small sample; No combo appearances recorded
- Inferred: Accessibility depends on natural draw because there are no searchers or starters; Vulnerable to backrow removal as a face-down continuous trap; Trigger is avoidable by an opponent who stops monster-effect damage
- Data gaps: no combos supplied — combo conversion is text-only inference no guides supplied no banlist token — assumed 3 copies (unlimited) no usage statistics (StatisticsCard) — archetype inclusion % inferred from deck sample only no top-card ranking context supplied