Confidence:StrongSolidPlausibleTentativeSpeculative

• The Mind Stone

  1W

  Legendary Artifact — Infinity StoneW

  Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
• The Legend of Yangchen // Avatar Yangchen

  3WW

  Enchantment — Saga // Legendary Creature — AvatarW

  Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
• Powerstone Minefield

  2RW

  EnchantmentRW

  Both cards trigger when a permanent attacks — they fire together.
• Raking Canopy

  1GG

  EnchantmentG

  Both cards trigger when a permanent attacks — they fire together.
• Displacer Kitten

  3U

  Creature — Cat BeastU

  Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
• Brago, King Eternal

  2WU

  Legendary Creature — Spirit NobleUW

  Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
• Aminatou, the Fateshifter

  WUB

  Legendary Planeswalker — AminatouBUW

  Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
• Appa, Loyal Sky Bison

  4WW

  Legendary Creature — Bison AllyW

  Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
• Extra Arms

  4R

  Enchantment — AuraR

  Both cards trigger when a permanent attacks — they fire together.
• Tamiyo, Inquisitive Student // Tamiyo, Seasoned Scholar

  U

  Legendary Creature — Moonfolk Wizard // Legendary Planeswalker — TamiyoGU

  Both cards trigger when a permanent attacks — they fire together.
• Combat Calligrapher

  3W

  Creature — Bird ClericW

  Both cards trigger when a permanent attacks — they fire together.
• Jon Irenicus, Shattered One

  2UB

  Legendary Creature — Elf WizardBU

  Both cards trigger when a permanent attacks — they fire together.
• Slumbering Dragon

  R

  Creature — DragonR

  Both cards trigger when a permanent attacks — they fire together.
• Tomik, Wielder of Law

  1WB

  Legendary Creature — Human AdvisorBW

  Both cards trigger when a permanent attacks — they fire together.
• Phelia, Exuberant Shepherd

  1W

  Legendary Creature — DogW

  Phelia, Exuberant Shepherd blinks (exiles and returns) a permanent, re-firing Marchesa's Decree's enter-the-battlefield effect.
• M'Baku, Jabari Chieftain

  1GG

  Legendary Creature — Human Noble WarriorG

  Both cards trigger when a permanent attacks — they fire together.
• Aqueous Form

  U

  Enchantment — AuraU

  Both cards trigger when a permanent attacks — they fire together.
• Yuna, Hope of Spira

  3GW

  Legendary Creature — Human ClericGW

  Yuna, Hope of Spira returns creatures from the graveyard to the battlefield, re-firing Marchesa's Decree's enter-the-battlefield effect.
• Sinister Possession

  B

  Enchantment — AuraB

  Both cards trigger when a permanent attacks — they fire together.
• Killian, Decisive Mentor

  1WB

  Legendary Creature — Human WarlockBW

  Both cards trigger when a permanent attacks — they fire together.
• Norin the Wary

  R

  Legendary Creature — Human WarriorR

  Both cards trigger when a permanent attacks — they fire together.
• Coveted Jewel

  6

  ArtifactC

  Both cards trigger when a permanent attacks — they fire together.
• Aerial Extortionist

  3WW

  Creature — Bird SoldierW

  Aerial Extortionist exiles a permanent and lets its owner cast it again — the recast fires Marchesa's Decree's cast trigger or its enter-the-battlefield effect.
• MacCready, Lamplight Mayor

  WB

  Legendary Creature — Human AdvisorBW

  Both cards trigger when a permanent attacks — they fire together.
• What Must Be Done

  3WW

  SorceryW

  What Must Be Done returns creatures from the graveyard to the battlefield, re-firing Marchesa's Decree's enter-the-battlefield effect.