This is a Mardu attack-trigger deck built around Isshin, Two Heavens as One, which makes every "whenever this creature attacks" or "whenever you attack" ability on a permanent trigger an extra time, and Windcrag Siege's Mardu mode copies that doubling. The deck is packed with creatures and equipment that make tokens tapped and attacking, draw cards, drain life or grow on attack, so each swing snowballs into a wider board, more cards and more damage. Haste enablers and extra combat phases multiply those doubled triggers within a single turn. How it wins: Doubled attack triggers flood the board with attacking tokens, and repeated combats plus attack-based life drains and Shredder's half-life hits overwhelm all opponents at once. Key roles: - Attack-trigger token makers: Creatures and equipment that create attacking tokens when they swing, each doubled by Isshin, and doubled again by Elspeth's token replacement, to go wide instantly (Adeline, Resplendent Cathar, Hero of Bladehold, Anim Pakal, Thousandth Moon). - Extra combats: Untap-and-attack-again effects that re-fire every doubled attack trigger in a second combat phase (Karlach, Fury of Avernus, Aurelia, the Warleader, Genji Glove). - Attack drain and burn: Per-attacker life loss and damage that turns a wide doubled attack into direct reach, while also gaining life (Brutal Hordechief, Commissar Severina Raine, Shredder, Shadow Master). - Attack-fueled value: Attack triggers that draw cards, exile and play cards, cast free spells or make Treasure, refilling resources with every combat (Audacious Thief, Etali, Primal Storm, Laelia, the Blade Reforged). - Token payoffs and sacrifice outlets: Cards that cash in short-lived tokens for cards, damage or anthems, including mobilize tokens that die at end step (Zurgo Stormrender, Goblin Bombardment, Belladonna Took). - Haste and combat protection: Haste enablers let fresh attackers trigger immediately, while indestructibility and damage prevention keep the alpha strike safe (Rising of the Day, Iroas, God of Victory, Flawless Maneuver).

isshin decklist

• Dark Fortress
• Windcrag Siege
• Phyrexian Arena
• Rising of the Day
• Battered Golem
• Diamond Pick-Axe
• Cecil, Dark Knight // Cecil, Redeemed Paladin
• Samut, Hazoret's Champion
• Elspeth, Storm Slayer
• Blade of Selves
• Ajani Unrelenting
• Audacious Thief
• Desert Were-Worm
• Alesha, Who Laughs at Fate
• Adeline, Resplendent Cathar
• Karlach, Fury of Avernus
• Ares, God of War
• Commissar Severina Raine
• Hero of Bladehold
• Etali, Primal Storm
• Anim Pakal, Thousandth Moon
• Laelia, the Blade Reforged
• Belladonna Took
• Genji Glove
• Boros Signet
• Krenko, Tin Street Kingpin
• Gideon's Memorial
• Orzhov Signet
• Spectacular Tactics
• Splinter Twin
• Swiftfoot Boots
• Boros Charm
• Sol Ring
• Arcane Signet
• Lightning Greaves
• Blasphemous Edict
• Rakdos Signet
• Multiply by Zero
• Iroas, God of Victory
• Splinter's Technique
• Lich's Relic
• Face Yourself
• Go Ninja Go
• Flawless Maneuver
• Make Your Move
• Goblin Bombardment
• Personify
• Path to Exile
• Swords to Plowshares
• Command Tower
• Haunted Ridge
• Room of Refuge
• Sundown Pass
• Escape Tunnel
• Rogue's Passage
• Thriving Bluff
• 8× Plains
• 4× Swamp
• 3× Mountain
• Shredder, Shadow Master
• Auron, Venerated Guardian
• Hexing Squelcher
• Hall of Echoes
• Caves of Koilos
• Dragonskull Summit
• Shattered Sanctum
• Battlefield Forge
• Sulfurous Springs
• Smoldering Marsh
• Nomad Outpost
• Exotic Orchard
• Isolated Chapel
• Thriving Moor
• Voice of Victory
• Zurgo Stormrender
• Talisman of Hierarchy
• Captain Lannery Storm
• Fervent Charge
• Aurelia, the Law Above
• Talisman of Conviction
• Aurelia, the Warleader
• Fellwar Stone
• Talisman of Indulgence
• Brutal Hordechief
• Otharri, Suns' Glory
• Breena, the Demagogue
• Wear // Tear