Confidence:StrongSolidPlausibleTentativeSpeculative

• Ruinous Waterbending

  1BB

  Sorcery — LessonB

  Both cards trigger when a creature dies — they fire together.
• Sothera, the Supervoid

  2BB

  Legendary EnchantmentB

  Both cards trigger when a creature dies — they fire together.
• 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.
• 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.
• Omnath, Locus of Rage

  3RRGG

  Legendary Creature — ElementalGR

  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.
• Garruk, Cursed Huntsman

  4BG

  Legendary Planeswalker — GarrukBG

  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.
• Liliana, Dreadhorde General

  4BB

  Legendary Planeswalker — LilianaB

  Both cards trigger when a creature dies — they fire together.
• Ajani, Nacatl Pariah // Ajani, Nacatl Avenger

  1W

  Legendary Creature — Cat Warrior // Legendary Planeswalker — AjaniRW

  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.
• Dragonsoul Prodigy

  2R

  Creature — Human MonkR

  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.
• Stone Haven Outfitter

  1W

  Creature — Kor Artificer AllyW

  Both cards trigger when a creature dies — they fire together.
• Shaile, Dean of Radiance // Embrose, Dean of Shadow

  1W2BB

  Legendary Creature — Bird Cleric // Legendary Creature — Human WarlockBW

  Both cards trigger when a creature dies — they fire together.
• Xho Cai, Flickering Talon

  URW

  Legendary Creature — Bird MonkRUW

  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.
• Koll, the Forgemaster

  RW

  Legendary Creature — Dwarf WarriorRW

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

  2B

  Legendary Creature — Symbiote Soldier HeroB

  Both cards trigger when a creature dies — they fire together.
• Liliana, Heretical Healer // Liliana, Defiant Necromancer

  1BB

  Legendary Creature — Human Cleric // Legendary Planeswalker — LilianaB

  Both cards trigger when a creature dies — they fire together.
• Anafenza, Unyielding Lineage

  2W

  Legendary Creature — Spirit SoldierW

  Both cards trigger when a creature dies — they fire together.
• Lolth, Spider Queen

  3BB

  Legendary Planeswalker — LolthB

  Both cards trigger when a creature dies — they fire together.
• Taborax, Hope's Demise

  2B

  Legendary Creature — Demon ClericB

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

  2B

  Creature — OozeB

  Both cards trigger when a creature dies — they fire together.
• Xander's Wake

  1B

  EnchantmentB

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