Confidence:StrongSolidPlausibleTentativeSpeculative

• Cautery Sliver

  RW

  Creature — SliverRW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Personal Incarnation

  3WWW

  Creature — Avatar IncarnationW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Samite Archer

  1WU

  Creature — Human Cleric ArcherUW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Pain for All

  2R

  Enchantment — AuraR

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Goblin Charbelcher

  4

  ArtifactC

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• D'Avenant Healer

  1WW

  Creature — Human Cleric ArcherW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• The Rollercrusher Ride

  X2R

  Legendary EnchantmentR

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Anthem of Rakdos

  2BRR

  EnchantmentBR

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Bruce Banner // The Incredible Hulk

  U2RRGG

  Legendary Creature — Human Scientist Hero // Legendary Creature — Gamma Berserker HeroGRU

  Bruce Banner grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• All-Out Assault

  2RWB

  EnchantmentBRW

  All-Out Assault grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• Aggravated Assault

  2R

  EnchantmentR

  Aggravated Assault grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• Chandra, Flamecaller

  4RR

  Legendary Planeswalker — ChandraR

  Chandra, Flamecaller deals damage to many targets, fueling Vassal's Duty's damage-payoff trigger.
• Mila, Crafty Companion // Lukka, Wayward Bonder

  1WW4RR

  Legendary Creature — Fox // Legendary Planeswalker — LukkaRW

  Mila, Crafty Companion produces broad damage that redirects through Vassal's Duty into something useful.
• Fires of Mount Doom

  2R

  Legendary EnchantmentR

  Fires of Mount Doom produces broad damage that redirects through Vassal's Duty into something useful.
• Godo, Bandit Warlord

  5R

  Legendary Creature — Human BarbarianR

  Godo, Bandit Warlord grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• Balthier and Fran

  1RG

  Legendary Creature — Human RabbitGR

  Balthier and Fran grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• Fury of the Horde

  5RR

  SorceryR

  Fury of the Horde grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• Fear of Missing Out

  1R

  Enchantment Creature — NightmareR

  Fear of Missing Out grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• Waves of Aggression

  3R/WR/W

  SorceryRW

  Waves of Aggression grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• Exocrine

  X2R

  Creature — TyranidR

  Exocrine deals damage to many targets, fueling Vassal's Duty's damage-payoff trigger.
• Swooping Pteranodon

  3RW

  Creature — DinosaurRW

  Swooping Pteranodon produces broad damage that redirects through Vassal's Duty into something useful.
• Éomer, Marshal of Rohan

  2RR

  Legendary Creature — Human KnightR

  Éomer, Marshal of Rohan grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• Bumi, Unleashed

  3RG

  Legendary Creature — Human Noble AllyGR

  Bumi, Unleashed grants an extra combat phase, enabling Vassal's Duty's combat-trigger payoff.
• Missy

  3UBR

  Legendary Creature — Time Lord RogueBRU

  Missy produces broad damage that redirects through Vassal's Duty into something useful.
• Comet, Stellar Pup

  2RW

  Legendary Planeswalker — CometRW

  Comet, Stellar Pup produces broad damage that redirects through Vassal's Duty into something useful.