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Goat · Back to the deck

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Harpie Dragon AggroGoat

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The archetypes with the most Goat decks in our corpus since 2026-05-07, one recent deck each. Suggestions only — nothing is chosen for you.

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Who goes first?

Who goes first alternates duel by duel. The results measure the bot as much as the deck: both sides are played by the same heuristics.

Plays under the oldest rules the engine has (2005 text for errata'd cards) · 3 cards play their Goat text · 1 still plays today’s · Side Deck not usedRules and credits

Goat is played under the oldest rules the engine has (2005 text for errata'd cards): every card works as it is ruled today, so this is close to Goat play, not exact.

  • The 15-card side deck is not used: a playtest is game one.

This deck: Goat card text

Plays its Goat text (3 cards):

  • Sinister Serpent — Returns from the GY to the hand in each of your Standby Phases; no limit and nothing is banished.
  • Ring of Destruction — Any turn, any face-up monster on either side: destroy it and both players take damage equal to its ATK at once.
  • Last Will — Activating it waits for the next time this turn one of your monsters goes from the field to your GY; then you may summon a 1500-or-less monster from your Deck. Earlier sends don't count; each Last Will gives one Summon.

Still plays today’s text (one card): its Goat-era text differs, or may, and there is no period script for it yet.

  • Twin-Headed Behemoth

Every duel is dealt from a seed, which the address keeps once you start: reloading the duel deals the same hands again.

Rules engine: YGOPro core (MIT), via koishipro-core.js 1.5.5. Card behaviour: YGOPro card scripts @ b83db1cc3f (GPL-2.0). Deckhand fixes 10 of them in every duel: utility.lua, which every card script shares, The Dragon that Devours the Dogma, Black Dragon Ninja, Branded Beast, procedure.lua, which every card script shares, Elemental HERO Tempest, Portable Battery Pack, Tri-Brigade Revolt, Tri-Brigade Arms Bucephalus II and Remove Brainwashing (GPL-2.0, derived from them: the fixes). In Goat duels, 9 cards play their period text through Deckhand’s own versions of their scripts (GPL-2.0, derived from those scripts: the Goat overrides).