Exosister Deck #765453 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 59/100 (±7 · Confidence: Medium)

• Primary strategy: Combo
• Secondary strategies: Toolbox, Tempo
• Format: master-duel

Legality

Main 40 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Xyz Summon Exosister boss monsters (Magnifica double attack, Karmael, Mikailis) off opponent GY movement, fed by Exosister engine monsters; Xyz boards protected by hand traps (Ash, Impermanence, Ghost Ogre) and locked by Exosister Asophiel, Kaspitell and Gibrine effects
• Turn 1 (going first): Open an Exosister starter (Martha only if no monsters are on field, otherwise Elis or Stella), search via Betrayal or Pax, and set up a GY-trigger Xyz while keeping Ash up
• Turn 2 (going second): Use hand traps (Ash, Impermanence, Ghost Ogre, Maxx C) to stop the opponent board, then Xyz Summon over it
• Recovery: Search Exosister cards with Betrayal or Pax, draw with Irene, Sophia or Maxx C, and reuse Ichiki Sayori-Hime by returning it to hand
• After siding: None: side count is 0 and the export has no side deck

Why it scores here

The deck opens a functional Exosister engine reasonably often: six 3-copy starters and 11 searcher-text copies give a high chance of a live starter in hand, with the estimated P(at least one 3-copy starter in a 5-card opening hand) at about 0.34. It converts through GY-trigger Xyz Summons into strong closers such as Magnifica and Karmael, which is the main source of its score. Interaction is broad and layered (Ash, Impermanence, Ghost Ogre, Maxx C, Crossout Designator, Dominus Spark), and the hand-trap density gives a fair going-second read. The score is held back by the absence of a side deck, a Seventh Tachyon line that depends on a single Number target, and Albion and Ecclesia slots with no enabler in the list. The score comes from the deck as a system (engine redundancy, interaction breadth, closing power), not from averaging card scores or from Exosister's popularity; the lack of combo data keeps the confidence at Medium.

Dimension scores

How the score was computed

Strategy profile: Combo profile only (Toolbox secondary noted, not blended). Structural ≈ 63.9, Going First ≈ 66, Going Second ≈ 68, Meta = provisional, Tournament Reliability ≈ 57. Modifiers: No side deck (-2); Unenabled or single-enabler slots (-2); Redundant GY-trigger Xyz engine (1). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional): 0.80*63.85 + 0.20*57 - 3 = 59.48, rounded to 59

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.34 · key two-card combo ≈ — · full-brick estimate ≈ — (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Multiple GY-trigger Xyz routes from several Exosister starters give engine redundancy
• Broad interaction across hand traps, spells and traps that cover different trigger types
• Strong closing Xyz options (Magnifica, Karmael, Mikailis, TY-PHON, ZEUS)
• Legal list with restricted cards at legal copy counts

Weaknesses

• No side deck, so no post-side adaptation
• Seventh Tachyon depends on a single Number target (Masquerade, 1 copy)
• Albion and Ecclesia have no in-list enablers and likely occupy dead Extra slots
• Off-archetype splash (Mulcharmy, Branded, Dominus, Seventh) dilutes the engine (purity 50.9%)
• 800 LP costs on Pax, Vadis and Returnia cut into resources

Critical choke points

• Exosister starter access on the first draw: a single hand without an Exosister starter forces a slow turn
• Opponent GY movement is needed for the Xyz trigger; a deck that does not move cards out of the GY leaves the engine idle

Recommended changes

Evidence & confidence

• Verified: Legality: 40 main, 15 extra, 0 side within Master Duel limits; Restricted cards (Crossout Designator, Maxx C, The Fallen and The Virtuous) run at legal copy counts; Copy histogram and Extra Deck breakdown match the card list; Core cards Maxx C, Exosister Pax, Betrayal, Martha, Elis and Ash present at 100% usage
• Observed: Guides describe GY-movement triggers and Vadis plus Arment as the main line (human guidance, not measured)
• Inferred: Starter and searcher probabilities from the hypergeometric table; Dimension scores and Structural and Final computation; Dead-slot risk for Tachyon, Albion and Ecclesia from card text; Interaction breadth from card text
• Provisional: Meta Power and matchup fit (no dated metagame or tournament data)
• Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot match record absent No win-rate telemetry: going-first, going-second, matchup and brick rates are Inferred or Unknown Usage statistics list Mikailis, Magnifica, Karmael, Gibrine, Asophiel, Kaspitell and ZEUS as missing core, although the resolved Extra Deck contains them; the usage match appears stale or keyed differently and was not used for the score Meta Power is Provisional without a dated metagame sample