Confidence:StrongSolidPlausibleTentativeSpeculative

• Baron Helmut Zemo

  BBB

  Legendary Creature — Human Noble VillainB

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Chandra, Flameshaper

  5RR

  Legendary Planeswalker — ChandraR

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Old Hob, Alleycat Blues

  4R

  Legendary Creature — Cat Mutant RebelRW

  Both cards produce the same kind of effect (shared token subtype).
• Thassa, Deep-Dwelling

  3U

  Legendary Enchantment Creature — GodU

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Heronblade Elite

  2G

  Creature — Human WarriorG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Righteous Valkyrie

  2W

  Creature — Angel ClericW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Sylvan Anthem

  GG

  EnchantmentG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Dire Undercurrents

  3U/BU/B

  EnchantmentBU

  Both cards trigger when a creature enters the battlefield — they fire together.
• Lord Skitter, Sewer King

  2B

  Legendary Creature — Rat NobleB

  Both cards trigger when a creature enters the battlefield — they fire together.
• Nephalia Smuggler

  U

  Creature — Human RogueU

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Soulherder

  1WU

  Creature — SpiritUW

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Mirrorhall Mimic // Ghastly Mimicry

  3U

  Creature — Spirit // Enchantment — AuraU

  One-shot copy enabler: a card enters as a copy of another (Phantasmal Image, Body Double, Phyrexian Metamorph), firing the partner's substantive ETB once. Not a repeating chain — fires once on entry — but valuable when the partner's ETB is combo-grade (graveyard reanimator, mana doubler, etc.).
• Dragon's Hoard

  3

  ArtifactC

  Both cards trigger when a creature enters the battlefield — they fire together.
• Saheeli Rai

  1UR

  Legendary Planeswalker — SaheeliRU

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Bishop of Wings

  WW

  Creature — Human ClericW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Romana II

  3W

  Legendary Creature — Time Lord ScientistW

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Don & Leo, Problem Solvers

  3W/UW/U

  Legendary Creature — Mutant Ninja TurtleUW

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Lathliss, Dragon Queen

  4RR

  Legendary Creature — DragonR

  Both cards trigger when a creature enters the battlefield — they fire together.
• Lossarnach Captain

  3W

  Creature — Human SoldierW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Obyra, Dreaming Duelist

  UB

  Legendary Creature — Faerie WarriorBU

  Both cards trigger when a creature enters the battlefield — they fire together.
• Ayara, First of Locthwain

  BBB

  Legendary Creature — Elf NobleB

  Both cards trigger when a creature enters the battlefield — they fire together.
• Valley Questcaller

  1W

  Creature — Rabbit WarriorW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Kíli the Resourceful

  1W

  Legendary Creature — Dwarf ScoutW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Dino DNA

  1

  ArtifactC

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Far Traveler

  2W

  Legendary Enchantment — BackgroundW

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.