Confidence:StrongSolidPlausibleTentativeSpeculative

• Gurgling Anointer

  2B

  Creature — Phyrexian HorrorB

  Draw pair: both cards engage with card draw. With a damage-or-draw trigger between them they form a draw engine.
• 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.
• Archivist of Gondor

  2U

  Creature — Human AdvisorU

  Both cards trigger on damage dealt — they fire together.
• Sphere Grid

  1G

  EnchantmentG

  Both cards trigger on damage dealt — they fire together.
• Stick, Fearless Mentor

  1R

  Legendary Creature — Human Monk HeroR

  Both cards trigger on damage dealt — they fire together.
• Knuckles the Echidna

  2RR

  Legendary Creature — Echidna WarriorR

  Both cards trigger on damage dealt — they fire together.
• Edea, Possessed Sorceress

  2UBR

  Legendary Creature — Human WarlockBRU

  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.
• Goro-Goro and Satoru

  UBR

  Legendary Creature — Goblin HumanBRU

  Both cards trigger on damage dealt — they fire together.
• Araña, Heart of the Spider

  1RW

  Legendary Creature — Spider Human HeroRW

  Both cards trigger on damage dealt — they fire together.
• Rinoa, Angel Wing

  2W

  Legendary Creature — Human Rebel WarlockW

  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.
• Oona's Blackguard

  1B

  Creature — Faerie RogueB

  Both cards trigger on damage dealt — they fire together.
• Kodama of the West Tree

  2G

  Legendary Creature — SpiritG

  Both cards trigger on damage dealt — they fire together.
• Mistway Spy

  U

  Creature — Merfolk DetectiveU

  Both cards trigger on damage dealt — they fire together.
• Niko Aris

  XWUU

  Legendary Planeswalker — NikoUW

  Both cards trigger on damage dealt — they fire together.
• The Rani

  1UBR

  Legendary Creature — Time Lord ScientistBRU

  Both cards trigger on damage dealt — they fire together.
• Avatar Kyoshi, Earthbender

  5GGG

  Legendary Creature — Human AvatarG

  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.
• Love on the Battlefield

  1UR

  EnchantmentRU

  Both cards trigger on damage dealt — they fire together.
• Gonti, Night Minister

  2BB

  Legendary Creature — Aetherborn RogueB

  Both cards trigger on damage dealt — they fire together.
• Ogre-Head Helm

  1R

  Artifact Creature — Equipment OgreR

  Both cards trigger on damage dealt — they fire together.
• Asgardian Inspiration

  R

  SorceryR

  Both cards trigger on damage dealt — 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.
• The Mind Stone

  1W

  Legendary Artifact — Infinity StoneW

  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.).