Mythical Bestiary
Spell Quick

Mythical Bestiary

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Send the top 2 cards of your Deck to the GY, then target 1 face-up card on the field that you can place a Spell Counter on; place up to 2 Spell Counters on it. If this card in its owner's possession is destroyed by an opponent's card effect: You can Special Summon 1 monster from your Deck that you can place a Spell Counter on, and if you do, place up to 2 Spell Counters on it. You can only activate 1 "Mythical Bestiary" per turn.




 
 
AI Power Analysis
Combo enablerConfidence: MediumEvaluated Apr 24, 2026
57± 6/ 100
Power Score
Intrinsic 55
Deck 59

Mythical Bestiary — Power Evaluation

Final Score: 57 ± 6 · Confidence: Medium

  • Intrinsic: 54.8 · Deck: 58.9 · Meta: provisional
  • Primary role: Combo enabler · Secondary: Extender, Recovery/Recursion

Why it scores here

Mythical Bestiary is a Quick-Play Spell whose value is entirely engine-bound: it sends the top 2 cards of the Deck to the GY and then places up to 2 Spell Counters on a face-up card that can hold them, and it floats into a Deck Special Summon of a Spell Counter monster if the opponent destroys it. Its score comes from that reliable Spell Counter generation plus the recursion float inside Spell Counter decks, confirmed by 340 recorded decks (avg 1.48 copies) almost universally alongside Endymion and Mythical Beast pieces. It earns no points for stats (it has none) and pays for its dependence on already having a Spell Counter host on board. Large ATK/DEF or popularity numbers were not used — the 3,724 views and the deck count only confirm the card is really played, not that it is strong.

Axis scores

Axis Score Evidence
Accessibility 58 A Quick-Play Spell live from hand, but its counter effect requires an existing face-up card that can hold Spell Counters, and there is no in-evidence searcher route (inferred).
Combo & Conversion 54 Text-only inference: sending 2 to GY plus placing 2 Spell Counters feeds Endymion/Mythical Beast summons, but it does not one-card a full board and combos_evidence is empty (inferred).
Resource Economy 56 It mills 2 for GY setup and gives 2 counters, and the destruction float Special Summons a monster from Deck for a net gain, roughly even-to-positive (inferred).
Effect & Interaction 26 The card itself removes or negates nothing; its disruption is only indirect through Spell Counters it feeds to other Endymion effects (inferred).
Material Utility 32 It is a Spell with no body of its own; its only material contribution is the monster Special Summoned by the float when it is destroyed (inferred).
Resilience & Flexibility 55 Quick-Play timing lets it be used on either turn, and the 'destroyed by opponent's card effect' clause converts removal into a Deck Special Summon (verified).
Deck-Building Efficiency 65 No garnet and no locks at 1-2 copies (avg 1.48, no lock text), but it is dead weight outside Spell Counter strategies (observed).

Calculation

Weight profile: 0.7 Combo enabler + 0.3 Extender. Intrinsic ≈ 54.8, Deck ≈ 58.9, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck

Strengths

  • Mills the top 2 cards to the GY while placing up to 2 Spell Counters, advancing the Spell Counter engine.
  • Quick-Play speed allows it to be used on the opponent's turn for counter placement or GY setup.
  • If destroyed by the opponent's card effect it Special Summons a Spell Counter monster from the Deck and adds up to 2 more counters.
  • Extremely consistent inclusion in Spell Counter decks: 340 decks, 100% inclusion in the sampled Endymion statistics, avg 1.48 copies.

Weaknesses

  • Its counter effect needs an existing face-up card that can hold Spell Counters; without one it is only a mill-2.
  • Provides no direct removal, negation, or board-breaking of its own.
  • Hard once-per-turn activation ('You can only activate 1 per turn').
  • Milling 2 is a downside in decks that do not benefit from GY setup.
  • Effectively niche to Spell Counter strategies; the top partners are all Endymion/Mythical Beast cards.

Counters / choke points

  • Hand traps that negate an effect sending cards from the Deck to the GY (e.g. Ash Blossom & Joyous Spring) stop the mill and counter placement.
  • Spell/Trap negation or effect negation that resolves before it can place counters.
  • Removing or not presenting a face-up Spelle Counter host so only the mill clause applies.
  • Banishing or locking the GY to blunt the mill value.

Best use

Spell Counter engine enabler / extender. Decks: Endymion, Mythical Beast, Spellbook (Spell Counter builds). Suggested copies: 1.

Evidence & gaps

  • Verified: Card text: send the top 2 cards of the Deck to the GY, then place up to 2 Spell Counters on a face-up card that can hold them.; Card text: if destroyed by the opponent's card effect, Special Summon 1 Spell Counter monster from the Deck and place up to 2 Spell Counters on it.; Card text: hard once-per-turn ('You can only activate 1 per turn'); it is a Quick-Play Spell with no ATK/DEF.; Deck evidence: 340 decks run it in the main deck, avg 1.48 copies, 0 side-deck.
  • Observed: Deck evidence: top partners are Spell Power Mastery (95.6%), Endymion, the Mighty Master of Magic (95.3%), Selene (94.1%), Servant of Endymion (93.5%), Mythical Beast Jackal King (93.2%).; Usage statistics: 100% inclusion in the sampled Endymion archetype data at typical 1 copy.; Deck evidence: 23 distinct archetypes across 340 decks, but the bulk is Endymion/Mythical Beast/Spellbook.
  • Inferred: Placing 2 Spell Counters feeds Endymion/Mythical Beast monster summons and Spell Counter-related effects.; Without a face-up Spell Counter host on board, the card devolves to a mill-2 with little value.; The mill-2 is GY setup in Spell Counter decks but a cost elsewhere.; The float turns opponent's removal into a Deck Special Summon, providing some resilience.
  • Data gaps: no combos supplied — combo conversion is text-only inference no guides supplied no banlist token — assumed 3 copies (unlimited) combos_evidence is entirely empty (0 appearances), so starter/material/payoff splits cannot be corroborated











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