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.
• Springheart Nantuko

  1G

  Enchantment Creature — Insect MonkG

  Both cards produce the same kind of effect (shared token subtype).
• Giant Adephage

  5GG

  Creature — InsectG

  Both cards produce the same kind of effect (shared token subtype).
• Grist, Voracious Larva // Grist, the Plague Swarm

  G

  Legendary Creature — Insect // Legendary Planeswalker — GristBG

  Both cards produce the same kind of effect (shared token subtype).
• Grist, the Hunger Tide

  1BG

  Legendary Planeswalker — GristBG

  Both cards produce the same kind of effect (shared token subtype).
• Overlord of the Mistmoors

  5WW

  Enchantment Creature — Avatar HorrorW

  Both cards produce the same kind of effect (shared token subtype).
• 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.).
• Infestation Sage

  B

  Creature — Elf WarlockB

  Both cards produce the same kind of effect (shared token subtype).
• Swarm Shambler

  G

  Creature — Fungus BeastG

  Both cards produce the same kind of effect (shared token subtype).
• Scouring Swarm

  1BG

  Creature — InsectBG

  Both cards produce the same kind of effect (shared token subtype).
• Osgood, Operation Double

  2UU

  Legendary Creature — Human Alien ShapeshifterU

  Both cards produce the same kind of effect (shared token subtype).
• Scute Swarm

  2G

  Creature — InsectG

  Both cards produce the same kind of effect (shared token subtype).
• Rise of the Ants

  4GG

  SorceryG

  Both cards produce the same kind of effect (shared token subtype).
• Vilespawn Spider

  GU

  Creature — SpiderGU

  Both cards produce the same kind of effect (shared token subtype).
• The Hunger Tide Rises

  2G

  Enchantment — SagaG

  Both cards produce the same kind of effect (shared token subtype).
• Alien Invasion

  1RRG

  EnchantmentGR

  Both cards produce the same kind of effect (shared token subtype).
• Hiveheart Shaman

  3G

  Creature — Human ShamanG

  Both cards produce the same kind of effect (shared token subtype).
• The Locust God

  4UR

  Legendary Creature — GodRU

  Both cards produce the same kind of effect (shared token subtype).
• The Swarmweaver

  2BG

  Legendary Artifact Creature — ScarecrowBG

  Both cards produce the same kind of effect (shared token subtype).
• 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.
• Xira, the Golden Sting

  1BRG

  Legendary Creature — Insect AssassinBGR

  Both cards produce the same kind of effect (shared token subtype).
• Hornet Queen

  4GGG

  Creature — InsectG

  Both cards produce the same kind of effect (shared token subtype).
• Old Rutstein

  1BG

  Legendary Creature — Human PeasantBG

  Both cards produce the same kind of effect (shared token subtype).
• Cursed Mirror

  2R

  ArtifactR

  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.).
• Infestation Expert // Infested Werewolf

  4G

  Creature — Human Werewolf // Creature — WerewolfG

  Both cards produce the same kind of effect (shared token subtype).