Tam, the Possibility leads a five-color superfriends deck that makes planeswalkers cheaper and then uses its activated ability to proliferate once for each different planeswalker type controlled, so a board of varied walkers grows loyalty explosively each turn. The whole engine exists to land and empower a Jace, the Reality Sculptor, keep it alive and loaded with loyalty, and use its 0 ability to mill each opponent's library down to its last card. Other Jaces and loyalty-boosting effects back up that one key walker, while a wide spread of planeswalker types keeps Tam's multiplier high. How it wins: Jace, the Reality Sculptor's 0 ability mills opponents down to a single card, and they lose by drawing from empty libraries on the following turn, with the rest of the superfriends board able to take over if that plan stalls. Key roles: - Planeswalker type diversity: a broad suite of walkers with different subtypes raises how many times Tam, the Possibility proliferates per activation, turning every walker into fuel for the loyalty engine (Tam, the Possibility) - Jace focus: extra Jace walkers and effects that tutor, protect or empower the key Jace give the deck redundancy and more ways to reach the mill finish - Proliferate and loyalty acceleration: proliferate spells, extra loyalty activations and counter doublers push walkers to ultimates and support the Jace plan beyond what the commander alone provides (Tam, the Possibility) - Five-color mana fixing: dense fixing and ramp reliably produce all five colors to pay Tam, the Possibility's activation every turn and to cast walkers across the color pie (Tam, the Possibility) - Board protection and fog effects: walls, sweepers, damage prevention and removal keep attackers off the walkers so loyalty survives to the mill turn and the win the turn after - Mill and library pressure: supplementary mill effects and ways to stop opponents from shuffling or recovering their libraries help make the mill-down-to-one finish stick

Tam, the Possibility decklist

• Jace, Reality Sculptor
• Way of the Paradox
• Way of the Mentor
• Way of the Cryomancer
• Way of the Mind Sculptor
• Vraska's Final Mercy
• Sanctum Lurker
• Unbounded Potential
• Smell Fear
• Professor Dellian Fel
• Oko, the Ringleader
• Gideon of the Trials
• Singularity Rupture
• Countersculpt
• Elspeth, Sun's Champion
• Sorin, Solemn Visitor
• Kaito, Dancing Shadow
• Mindseeker Oculus
• Tam's Resistance
• Protege's Awakening
• Way of the Warlord
• Way of the Deathbringer
• Way of the Healer
• Way of the Wildspeaker