This is a coin-flip deck. Zndrsplt and Okaun each flip until a loss at the beginning of combat. Every win draws a card through Zndrsplt and doubles Okaun's power and toughness, so the commanders work as a card engine and a growing beater at once. Krark's Thumb is the key piece: flipping two coins and keeping one makes most flips near-certain wins, which turns every flip card in the list (Tavern Scoundrel Treasures, Karplusan Minotaur pings, Chance Encounter counters, Fiery Gambit, Stitch in Time) into reliable value. An artifact tutor and recursion package exists largely to find the Thumb and keep it on the battlefield. How it wins: Okaun swings with a hugely doubled body, made evasive and given double strike or extra combats for commander damage, with Chance Encounter's luck counters, Niv-Mizzet draw pings and Chandra's Ignition as alternate kills. Key roles: - Flip amplification: Turning the 50/50 into a weighted coin so the commanders' and support cards' flips win far more often and chain longer (Krark's Thumb, Krark, the Thumbless, Mirror March) - Artifact tutoring and recursion: Searching up the Thumb or key equipment and returning it if destroyed, using sacrifice-and-reanimate effects and artifact-matters lands (Tribute Mage, Whir of Invention, Goblin Engineer) - Flip-win payoffs: Cards that convert each won flip into Treasure, damage, cards, extra turns or an outright win, stacking on top of the commanders' draws (Chance Encounter, Tavern Scoundrel, Karplusan Minotaur) - Draw-trigger engines: The flood of cards from won flips and cantrips feeds damage or flying tokens on every draw (Niv-Mizzet, Parun, The Locust God, Yusri, Fortune's Flame) - Okaun voltron finish: Haste, protection, evasion, double strike and extra combats turn a doubled Okaun into lethal commander damage or a board-wide blast (Embercleave, Temur Battle Rage, Chandra's Ignition) - Copy effects: Duplicating a commander doubles the beginning-of-combat flip triggers and the payoffs for each win (Spark Double, Sakashima the Impostor)

Heads I Win, Tails You Lose decklist

• Daretti, Scrap Savant
• Ral Zarek
• Goblin Kaboomist
• Krark, the Thumbless
• Niv-Mizzet, Parun
• Spark Double
• Frenetic Sliver
• Goblin Archaeologist
• Karplusan Minotaur
• Tavern Scoundrel
• Tribute Mage
• Bloodsworn Steward
• Goblin Engineer
• The Locust God
• Yusri, Fortune's Flame
• Mogg Assassin
• Sakashima the Impostor
• Stitch in Time // Stitch in Time
• Blasphemous Act
• Fabricate
• Fiery Gambit
• Chandra's Ignition
• Gamble
• Reshape
• Seize the Day
• Ponder
• Preordain
• Serum Visions
• Slip Through Space
• Squee's Revenge
• Vandalblast
• Negate
• Chaos Warp
• Whir of Invention
• Counterspell
• Long-Term Plans
• Muddle the Mixture
• Temur Battle Rage
• Krark's Thumb // Krark's Thumb
• Izzet Signet
• Lightning Greaves
• Mind Stone
• Swiftfoot Boots
• Sword of Vengeance
• Thought Vessel
• Whispersilk Cloak
• Boompile
• Commander's Plate
• Embercleave
• Shadowspear
• Arcane Signet
• Crooked Scales
• Sol Ring
• Talisman of Creativity
• Propaganda // Propaganda
• Mirror March
• Chance Encounter
• Footfall Crater
• Impulsive Maneuvers
• Planar Chaos
• Risky Move
• Temple of Epiphany
• Wandering Fumarole
• Buried Ruin
• Great Furnace
• Izzet Boilerworks
• Myriad Landscape
• Path of Ancestry
• Rogue's Passage
• 7× Island
• 8× Mountain
• Academy Ruins
• Cascade Bluffs
• Desolate Lighthouse
• Exotic Orchard
• Flamekin Village
• Inventors' Fair
• Shivan Reef
• Spinerock Knoll
• Sulfur Falls
• Tolaria West
• Training Center
• Command Tower
• Reliquary Tower
• Temple of the False God