Shaddoll Fusion

Shaddoll Fusion — Power Evaluation

Final Score: 73 ± 5 · Confidence: Medium

• Intrinsic: 69.7 · Deck: 74.3 · Meta: provisional
• Primary role: Combo enabler · Secondary: Starter, Recovery/Recursion

Why it scores here

Shaddoll Fusion earns its score as the engine's core fusion spell: it is run in 400/400 sampled decks at an average of 2.35 copies (232 at three) and appears in 6/6 recorded Shaddoll combos at an average power index of 82.8. Its real value is conversion, not stats — the text lets it fuse using Deck materials whenever the opponent controls an Extra Deck Special Summoned monster, letting it build El Shaddoll Construct/Winda/Apkallone lines out of cards it never had to draw, with example boards showing net card advantage of 5 and 7. It brings no direct interaction itself, loses to a single negate on the Spell, and only functions inside a Shaddoll-material deck, which caps it well below the top tier. Its 0 ATK/DEF and unremarkable stat line contribute nothing to this evaluation.

Axis scores

Calculation

Weight profile: 0.7 Combo enabler + 0.3 Starter (both share the Starter/Combo enabler profile). Intrinsic ≈ 69.7, Deck ≈ 74.3, Meta = provisional. Modifiers: Exceptional splashability (1). Final formula: 0.40*Intrinsic + 0.60*Deck

Strengths

• Core fusion spell of the Shaddoll engine: 400/400 sampled decks main-deck it at 2.35 average copies, with usage statistics showing 100% inclusion in one Shaddoll build and 75% in another.
• Deck-as-material clause (when the opponent controls an Extra Deck Special Summoned monster) converts undrawn cards into a Fusion body, giving strong going-second value.
• Produces high-impact El Shaddoll bosses — Construct (74.5% co-deck), Shekhinaga (61.8%), Winda (60.8%), Apkallone (59.5%) — whose GY triggers and effects generate card advantage.
• Recorded combo examples reach net card advantage of 5 and 7 and an average power index of 82.8, showing it converts into full, resource-positive boards.
• Highly splashable: it appears across 60 distinct archetypes including Branded, Tearlaments, Invoked, Gem-Knights, Dracotail and Train.

Weaknesses

• Provides no negation, removal, or disruption on its own — all interaction is inherited from the Fusion Monster it summons.
• One negate on the Spell (e.g. Ash Blossom & Joyous Spring) stops the play at the resolution point.
• Functionally dead in any deck without Shaddoll materials and Shaddoll Fusion targets in the Extra Deck.
• Hard once-per-turn: only one 'Shaddoll Fusion' can be activated per turn, limiting follow-up copies.
• The Deck-fusion bonus is conditional on the opponent controlling an Extra Deck Special Summoned monster.

Counters / choke points

• Ash Blossom & Joyous Spring and similar negates on the fusion Spell
• Anti-Special-Summon / anti-Fusion floodgates such as Dimensional Barrier or Summon Limit
• Graveyard hate (Called by the Grave, D.D. Crow) that strips the sent Shaddoll materials before their triggers resolve
• Boards with no Extra Deck Special Summoned monster, which turns off the Deck-material clause

Best use

Core fusion Spell / combo enabler that starts or extends Shaddoll Fusion lines. Decks: Shaddoll, Branded Shaddoll, Tearlaments Shaddoll, Invoked Shaddoll, Gem-Knight, Dracotail. Suggested copies: 3.

Evidence & gaps

• Verified: Card text: Fusion Summon 1 'Shaddoll' Fusion Monster from the Extra Deck using monsters from the hand or field as Fusion Material.; Card text: if the opponent controls a monster Special Summoned from the Extra Deck, monsters in the Deck can also be used as Fusion Material.; Card text: only 1 'Shaddoll Fusion' can be activated per turn.; Card is a Normal Spell with 0 ATK / 0 DEF and belongs to the Shaddoll archetype.
• Observed: 400/400 sampled decks run it in the main deck, average 2.35 copies (232 decks at 3, 75 at 2, 93 at 1).; usage statistics: 100% inclusion (typical 2 copies) in Shaddoll deck archetype 1595 and 75% inclusion (typical 3 copies) in archetype 556.; Appears in 6/6 recorded combos (100%) at an average power index of 82.8, with starter role 16.7% and end-hand appearances 16.7%.; Top co-deck cards: Shaddoll Dragon 79%, El Shaddoll Construct 74.5%, Shaddoll Beast 70.5%, El Shaddoll Meshahrail 62%, El Shaddoll Shekhinaga 61.8%.; Spread across 60 distinct archetypes including Dracotail (6%), Tearlaments (5.2%), Branded (3.2%), Invoked (3%) and Gem-Knights (3%).; Recorded combo examples netCardAdvantage of 5 and 7 with power index 100, and a going-second line at power index 83.
• Inferred: Sent Shaddoll materials still resolve their Graveyard effects, so the fusion line is resource-positive even if the summoned body is removed.; The Deck-material clause makes it a genuine going-second enabler only when the opponent has an Extra Deck Special Summoned monster; otherwise it is a normal hand/field fusion.; It functions as the engine's fusion gateway rather than a payoff or material piece, consistent with 0% material role and 0% payoff role in the combo data.
• Data gaps: no banlist token — assumed 3 copies (unlimited) combo data sample is very small (6 combos, 3 examples), so combo-derived percentages are low-resolution no guide snippets actually describing Shaddoll Fusion's role — guide sections list it only as a staple co-card no dated metagame sample, so meta power is null/provisional