Confidence:StrongSolidPlausibleTentativeSpeculative

• Mikaeus, the Unhallowed✓

  3BBB

  Legendary Creature — Zombie ClericB

  Death replacement: a death-replacement grant on one card lets the other repeatedly die-and-return for combo (Mikaeus + Walking Ballista class).
• Krosan Vorine

  3G

  Creature — Cat BeastG

  Synergy between the two cards.
• The Foretold Soldier

  2GG

  Creature — Alien Zombie SoldierG

  Synergy between the two cards.
• Battlefront Krushok

  4G

  Creature — BeastG

  Synergy between the two cards.
• 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.
• Chevill, Bane of Monsters

  BG

  Legendary Creature — Human RogueBG

  Plague Belcher produces damage that can kill creatures, enabling Chevill, Bane of Monsters's death-trigger or removal payoff.
• Minsc & Boo, Timeless Heroes

  2RG

  Legendary Planeswalker — MinscGR

  Plague Belcher produces damage that can kill creatures, enabling Minsc & Boo, Timeless Heroes's death-trigger or removal payoff.
• 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.
• Banon, the Returners' Leader

  RW

  Legendary Creature — Human Cleric RebelRW

  Graveyard pair: one card brings creatures back from the graveyard repeatedly (or a creature that returns itself), and the other keeps feeding the loop — a recurring reanimator with a payoff, or a sacrifice outlet with a self-recurring creature.
• Hateful Eidolon

  B

  Enchantment Creature — SpiritB

  Both cards trigger when a creature dies — they fire together.
• The Meathook Massacre

  XBB

  Legendary EnchantmentB

  Both cards trigger when a creature dies — they fire together.
• The Serpent Society

  1BG

  Legendary Creature — Human Snake VillainBG

  Both cards trigger when a creature dies — they fire together.
• Wight

  1B

  Creature — Zombie SoldierB

  Both cards trigger when a creature dies — they fire together.
• Mari, the Killing Quill

  1BB

  Legendary Creature — Vampire AssassinB

  Plague Belcher produces damage that can kill creatures, enabling Mari, the Killing Quill's death-trigger or removal payoff.
• Quest for the Gravelord

  B

  EnchantmentB

  Both cards trigger when a creature dies — they fire together.
• Liliana, Dreadhorde General

  4BB

  Legendary Planeswalker — LilianaB

  Both cards trigger when a creature dies — they fire together.
• Edea, Possessed Sorceress

  2UBR

  Legendary Creature — Human WarlockBRU

  Both cards trigger when a creature dies — they fire together.
• Bequeathal

  G

  Enchantment — AuraG

  Both cards trigger when a creature dies — they fire together.
• Syr Vondam, Sunstar Exemplar

  WB

  Legendary Creature — Human KnightBW

  Both cards trigger when a creature dies — they fire together.
• Kraven the Hunter

  1BG

  Legendary Creature — Human Warrior VillainBG

  Plague Belcher produces damage that can kill creatures, enabling Kraven the Hunter's death-trigger or removal payoff.
• Rampart Architect

  3G

  Creature — Elephant AdvisorG

  Both cards trigger when a creature dies — they fire together.
• Stone Haven Outfitter

  1W

  Creature — Kor Artificer AllyW

  Both cards trigger when a creature dies — they fire together.
• Toshiro Umezawa

  1BB

  Legendary Creature — Human SamuraiB

  Plague Belcher produces damage that can kill creatures, enabling Toshiro Umezawa's death-trigger or removal payoff.
• Shadow Urchin

  2B/R

  Creature — OupheBR

  Both cards trigger when a creature dies — they fire together.
• Rinoa, Angel Wing

  2W

  Legendary Creature — Human Rebel WarlockW

  Both cards trigger when a creature dies — they fire together.