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.
• Chevill, Bane of Monsters

  BG

  Legendary Creature — Human RogueBG

  Chomping Mastasaur produces damage that can kill creatures, enabling Chevill, Bane of Monsters's death-trigger or removal payoff.
• Bloodline Recollector // Ancestral Craving

  1BB

  Creature — Vampire Warlock // InstantB

  Chomping Mastasaur produces damage that can kill creatures, enabling Bloodline Recollector'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.
• The Meathook Massacre

  XBB

  Legendary EnchantmentB

  Chomping Mastasaur produces damage that can kill creatures, enabling The Meathook Massacre's death-trigger or removal payoff.
• Kraven the Hunter

  1BG

  Legendary Creature — Human Warrior VillainBG

  Chomping Mastasaur produces damage that can kill creatures, enabling Kraven the Hunter's death-trigger or removal payoff.
• 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.
• Undead Sprinter

  BR

  Creature — ZombieBR

  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.
• Timeline Culler

  BB

  Creature — Drix WarlockB

  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.
• 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.
• Lagomos, Hand of Hatred

  1BR

  Legendary Creature — Human ShamanBR

  Chomping Mastasaur produces damage that can kill creatures, enabling Lagomos, Hand of Hatred's death-trigger or removal payoff.
• Tenacious Underdog

  1B

  Creature — Human WarriorB

  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.
• Sticky Fingers

  R

  Enchantment — AuraR

  Chomping Mastasaur produces damage that can kill creatures, enabling Sticky Fingers's death-trigger or removal payoff.
• 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.).
• A-Minsc & Boo, Timeless Heroes

  3RG

  Legendary Planeswalker — MinscGR

  Chomping Mastasaur produces damage that can kill creatures, enabling A-Minsc & Boo, Timeless Heroes's death-trigger or removal payoff.
• Athreos, God of Passage

  1WB

  Legendary Enchantment Creature — GodBW

  Chomping Mastasaur produces damage that can kill creatures, enabling Athreos, God of Passage's death-trigger or removal payoff.
• Saheeli Rai

  1UR

  Legendary Planeswalker — SaheeliRU

  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.
• Squee, the Immortal

  1RR

  Legendary Creature — GoblinR

  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.
• Eater of Virtue

  1

  Legendary Artifact — EquipmentC

  Chomping Mastasaur produces damage that can kill creatures, enabling Eater of Virtue's death-trigger or removal payoff.
• Oathsworn Vampire

  1B

  Creature — Vampire KnightB

  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.
• Sméagol, Helpful Guide

  1BG

  Legendary Creature — Halfling HorrorBG

  Chomping Mastasaur produces damage that can kill creatures, enabling Sméagol, Helpful Guide's death-trigger or removal payoff.
• Bonecache Overseer

  B

  Creature — Squirrel WarlockB

  Chomping Mastasaur produces damage that can kill creatures, enabling Bonecache Overseer's death-trigger or removal payoff.
• Cult Conscript

  B

  Creature — Skeleton WarriorB

  Chomping Mastasaur produces damage that can kill creatures, enabling Cult Conscript's death-trigger or removal payoff.