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.
• Lagrella, the Magpie

  GWU

  Legendary Creature — Human SoldierGUW

  Both cards trigger when a creature enters the battlefield — they fire together.
• April O'Neil, Live on the Scene

  1U

  Legendary Creature — Human DetectiveU

  Both cards trigger when a creature enters the battlefield — they fire together.
• Prowl, Stoic Strategist // Prowl, Pursuit Vehicle

  3W

  Legendary Artifact Creature — Robot // Legendary Artifact — VehicleW

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

  2

  Artifact — BookC

  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.).
• Romana II

  3W

  Legendary Creature — Time Lord ScientistW

  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.
• Cloakwood Swarmkeeper

  G

  Creature — Elf RangerG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Yoshimaru, Ever Faithful

  W

  Legendary Creature — DogW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Threats Around Every Corner

  3G

  EnchantmentG

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

  3UU

  Legendary Snow Creature — YetiGUW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Fire Lord Zuko

  RWB

  Legendary Creature — Human Noble AllyBRW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Baron Bertram Graywater

  2WB

  Legendary Creature — Vampire NobleBW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Tawnos, Solemn Survivor

  1U

  Legendary Creature — Human ArtificerBUW

  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.
• Maralen, Fae Ascendant

  2BGU

  Legendary Creature — Elf Faerie NobleBGU

  Both cards trigger when a creature enters the battlefield — they fire together.
• Marit Lage's Slumber

  1U

  Legendary Snow EnchantmentU

  Both cards trigger when a creature enters the battlefield — they fire together.
• The Fourteenth Doctor

  R/GWU

  Legendary Creature — Time Lord DoctorGRUW

  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.).
• Iceberg Cancrix

  1U

  Snow Creature — CrabU

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

  1G

  Creature — Elf ScoutG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Sakashima's Protege

  4UU

  Creature — ShapeshifterU

  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.).
• Cryptid Inspector

  2G

  Creature — Elf WarriorG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Offspring's Revenge

  2RWB

  EnchantmentBRW

  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.
• Darksteel Splicer

  6W

  Creature — Phyrexian ArtificerW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Bladewing's Thrall

  2BB

  Creature — ZombieB

  Both cards trigger when a creature enters the battlefield — they fire together.
• Crossbones, Malicious Mercenary

  3B

  Legendary Creature — Human Mercenary VillainB

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