WATER
5Blue Dragon Ninja
Archetype:
Ninja
ATK:
2100
DEF:
1200
View:
2882
Once per turn, during either player's turn: You can discard 1 "Ninja" monster and 1 "Ninjitsu Art" card to target 1 face-up monster your opponent controls; this turn, that monster's effects are negated, also that monster cannot attack.
Blue Dragon Ninja — Power Evaluation
Final Score: 50 ± 8 · Confidence: Medium
- Intrinsic: 51 · Deck: 49 · Meta: provisional
- Primary role: Removal / Negation · Secondary: Utility
Why it scores here
Blue Dragon Ninja is a single-target monster negation: once per turn it negates one face-up opposing monster's effects and stops that monster attacking this turn, usable on either player's turn. Its cost is two cards (a Ninja monster and a Ninjitsu Art card), so it trades card advantage for interaction and returns no board or card advantage of its own. The 2100 ATK and Level 5 body earn almost nothing on their own; the score comes from the negation and from the 7-deck sample showing it is a practical, one-copy slot in Ninja builds rather than a forgotten pick.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 55 | Needs a Ninja monster and a Ninjitsu Art card together in hand; both are common in the sampled decks, which show 7 of 7 decks running it alongside many Ninja partners (observed). |
| Combo & Conversion | 15 | No recorded boards exist, and the text creates no bodies or extra board presence, so conversion is near zero beyond the negate itself (inferred from text, no combo evidence). |
| Resource Economy | 25 | Two-card discard cost for a single-target negate with no draw, search or recursion, so it is a net card disadvantage (verified from text). |
| Effect & Interaction | 60 | Negates a monster's effects and blocks its attack, usable on either turn and once per turn; it is monster-only, so it does not stop spells, traps or summons (verified from text). |
| Material Utility | 40 | Level 5 Water Sea Serpent is a reasonable generic material body, but there is no combo or deck evidence of it being used as material (inferred). |
| Resilience & Flexibility | 45 | The negate is a single targeted activation that depends on two specific card types in hand, with one-shot per-turn use and no redundancy shown in the evidence (inferred from text and deck counts). |
| Deck-Building Efficiency | 65 | Played at one copy in 6 of 7 sampled decks and needs no garnets or locks, though it is archetype-locked to Ninja and Ninjitsu Art (observed and verified). |
Calculation
Weight profile: Removal / Negation profile applied directly (no secondary blend). Intrinsic ≈ 51, Deck ≈ 49, Meta = provisional. Modifiers: Archetype-locked cost (-2). Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Negates a face-up monster's effects and stops its attack on either player's turn, which is flexible timing
- Single once-per-turn activation with no garnet or lock cost; typically one copy
- Consistently included across 7 sampled decks alongside the Ninja core (Ninja Grandmaster Hanzo, Kagero, Baku and others at 85-100% co-occurrence)
Weaknesses
- Two-card discard cost gives a net card disadvantage for one negate
- Only targets monsters; cannot answer spells, traps or summons
- Requires a Ninja monster and a Ninjitsu Art card, limiting it to Ninja-based builds
- No combo evidence, so its board-building value is unmeasured
- Activation location is not stated in the evidence text
Counters / choke points
- Removing or bouncing the Ninja monster or Ninjitsu Art card in response to the activation (inferred)
- Negating the activation of the card itself (inferred from general chain rules, not from card text)
Best use
Single-target negation for Ninja builds. Decks: Ninja (archetype 804), Ninjitsu Art. Suggested copies: 1.
Evidence & gaps
- Verified: Once per turn on either player's turn, discarding a Ninja monster and a Ninjitsu Art card as cost; Targets one face-up opposing monster; negates its effects and prevents it attacking this turn; Appears in 7 of 7 sampled decks; one copy in 6 of them, two in 1
- Observed: Four archetypes across the sampled decks, with Ninja the most common (4 decks); Top partners co-occur in 100% of the sampled decks
- Inferred: Level 5 Water Sea Serpent body is a generic material fit (stats only, no usage evidence); Monster removal or bounce in response is a practical answer to its activation
- Data gaps: No combos supplied; combo conversion and material roles are text-only inference No guides supplied No usage statistics (StatisticsCard) available; inclusion measured from a 7-deck sample only The evidence description does not state the activation location; accessibility is inferred from the cost No rulings supplied No banlist token; assumed 3 copies (unlimited) legal copies empty for all formats