Confidence:StrongSolidPlausibleTentativeSpeculative

• Elspeth, Storm Slayer

  3WW

  Legendary Planeswalker — ElspethW

  One card multiplies the tokens the other creates — a token doubler pointed at a steady token source.
• Ojer Taq, Deepest Foundation // Temple of Civilization

  4WW

  Legendary Creature — God // LandW

  One card multiplies the tokens the other creates — a token doubler pointed at a steady token source.
• 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.
• Murmuration

  4W

  EnchantmentW

  Both cards produce the same kind of effect (shared token subtype).
• Hermes, Overseer of Elpis

  3U

  Legendary Creature — Elder WizardU

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

  WW

  Creature — Human ClericW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Masterwork of Ingenuity

  1

  Artifact — EquipmentC

  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.).
• Lathliss, Dragon Queen

  4RR

  Legendary Creature — DragonR

  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.
• Fíli the Pathfinder

  3W

  Legendary Creature — Dwarf ScoutW

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

  G

  Creature — Frog WarriorG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Shadow Alley Denizen

  B

  Creature — Vampire RogueB

  Both cards trigger when a creature enters the battlefield — they fire together.
• Baboon Spirit

  2U

  Creature — Monkey SpiritU

  Both cards trigger when a creature enters the battlefield — they fire together.
• Mardu Woe-Reaper

  W

  Creature — Human WarriorW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Mary Jane Watson

  1G/W

  Legendary Creature — Human PerformerGW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Yorvo, Lord of Garenbrig

  GGG

  Legendary Creature — Giant NobleG

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