Triamid Sphinx

Triamid Sphinx — Power Evaluation

Final Score: 43 ± 6 · Confidence: Medium

• Intrinsic: 43.6 · Deck: 45.4 · Meta: provisional
• Primary role: Boss/End-board · Secondary: Floodgate/Control, Material body

Why it scores here

Triamid Sphinx is a dedicated Triamid payoff body: it cannot be Normal Summoned or Set and can only arrive through a "Triamid" card's effect or its own hand trigger when another face-up Triamid card is destroyed, so it is dead without the archetype shell and does nothing on its own. What it turns into is a 2500/2500 attacker that grows by 500 ATK/DEF per differently-named Field Spell in the Graveyard plus a soft attack lock that forces opposing monsters onto itself, which is real but passive control rather than removal, negation, or card advantage. Its 2500 ATK and stat-boosting clause earn no points here — the score is driven by the restrictive summon condition, the total absence of searching or resource gain, and its one-copy status in Triamid lists.

Axis scores

Calculation

Weight profile: 0.7 Boss/End-board + 0.3 Floodgate/Control. Intrinsic ≈ 43.6, Deck ≈ 45.4, Meta = provisional. Modifiers: Self-locking summon restriction (-2). Final formula: 0.40*Intrinsic + 0.60*Deck

Strengths

• While you control another "Triamid" card, opposing monsters cannot attack except to attack Triamid Sphinx, creating a persistent soft battle lock.
• Gains 500 ATK and DEF per differently-named Field Spell in the Graveyard, which Triamid's Field Spell rotation stacks quickly.
• Can Special Summon itself from the hand when another face-up Triamid card is destroyed by battle or card effect, giving the deck a free follow-up body.
• 2500/2500 base stats on a Level 10 body are respectable once it lands.

Weaknesses

• Cannot be Normal Summoned/Set and cannot be Special Summoned any other way, making it a dead card without the Triamid package.
• Provides no search, no removal, and no negation — purely passive board presence.
• The ATK boost and the attack lock both switch off the moment the other "Triamid" card leaves the field.
• Level 10 is awkward material for the Rank 3–5 Xyz monsters the deck actually plays (Gorgonic Guardian, Nightmare Shark, Digital Bug Corebage).

Counters / choke points

• Negating or banishing the Special Summon leaves it stuck in hand as a dead card.
• Removing the other face-up Triamid card turns off both the stat boost and the attack restriction.
• Non-battle removal (destroy/banish/shuffle) bypasses the attack lock entirely.
• Kaiju-style tributing over Triamid Sphinx sidesteps the forced-attack clause.
• Graveyard denial (banishing the Field Spells) caps its ATK/DEF growth.

Best use

End-board boss and soft battle lock. Decks: Triamids. Suggested copies: 1.

Evidence & gaps

• Verified: Cannot be Normal Summoned/Set and must be Special Summoned with the effect of a "Triamid" card; cannot be Special Summoned by other ways.; Can Special Summon itself from the hand if a face-up "Triamid" card you control, except "Triamid Sphinx", is destroyed by battle or card effect.; While you control another "Triamid" card, it gains 500 ATK/DEF for each differently-named Field Spell in the Graveyard and opposing monsters cannot attack except to attack Triamid Sphinx.; It is a Level 10 EARTH Rock Effect Monster with 2500 ATK / 2500 DEF in the Triamid archetype, legal in TCG, OCG, Master Duel and Duel Links.
• Observed: 84 decks in the sample run it, all in the main deck, at an average of 1.31 copies; 62 of 84 run exactly one copy.; Its deck rows are overwhelmingly Triamid (64.3% + 14.3% + 7.1% + 1.2% across Triamid archetype ids), with only small splashes elsewhere.; Every top partner is a Triamid card (Triamid Hunter, Dancer, Cruiser, Kingolem, Fortress at 100% co-deck).; 0 recorded combo appearances, 0 as starter, 0 as material, no average power index.
• Inferred: Its practical role is end-board payoff/soft lock rather than starter or combo enabler, since it must be summoned by a Triamid effect and provides no search.; Because it cannot be Special Summoned by other ways, it cannot be used as cheap generic material and any stopped summon leaves it dead in hand.; The Graveyard Field Spell pool is naturally built by Triamid's own Field Spell rotation, so the ATK bonus is usually 500–1500 in practice.; Level 10 does not convert into the Rank 3–5 Xyz lines the partner list shows (Gorgonic Guardian, Nightmare Shark, Giga-Brilliant, Malevolent Sin).
• Data gaps: no combos supplied — combo conversion and material use are text-only inference no banlist token — assumed 3 copies (unlimited) no usage statistics (StatisticsCard) — archetype inclusion % inferred from the 84-deck sample only no explicit list of "Triamid" cards that summon it from hand/deck, so the primary summon route is only partially evidenced