Confidence:StrongSolidPlausibleTentativeSpeculative

• Terra, Magical Adept // Esper Terra

  1RG

  Legendary Creature — Human Wizard Warrior // Legendary Enchantment Creature — Saga WizardBGRUW

  Copy engine: one card makes copies of a creature — once a turn, or once for each time you pay its cost — and each copy pays off: the creature's enter-the-battlefield effect fires again, or the hasty copy uses its tap ability. Real, repeatable value — every copy has its turn or its price, so it never goes infinite on its own.
• Baron Helmut Zemo

  BBB

  Legendary Creature — Human Noble VillainB

  Baron Helmut Zemo creates token copies, feeding Harvestguard Alseids's ETB or copy payoff.
• Hazel of the Rootbloom

  2BG

  Legendary Creature — Squirrel DruidBG

  Hazel of the Rootbloom creates token copies, feeding Harvestguard Alseids's ETB or copy payoff.
• Chandra, Flamecaller

  4RR

  Legendary Planeswalker — ChandraR

  Chandra, Flamecaller deals damage to many targets, fueling Harvestguard Alseids's damage-payoff trigger.
• Stangg, Echo Warrior

  2RG

  Legendary Creature — Human WarriorGR

  Stangg, Echo Warrior creates token copies, feeding Harvestguard Alseids's ETB or copy payoff.
• Court of Vantress

  2UU

  EnchantmentU

  Court of Vantress creates token copies, feeding Harvestguard Alseids's ETB or copy payoff.
• Masterwork of Ingenuity

  1

  Artifact — EquipmentC

  Masterwork of Ingenuity is a clone — it can enter as a copy of another creature — so it re-uses Harvestguard Alseids's enter-the-battlefield effect.
• Let the Galaxy Burn

  X5R

  SorceryR

  Let the Galaxy Burn deals damage to many targets, fueling Harvestguard Alseids's damage-payoff trigger.
• Loki, the Deceiver

  1UBR

  Legendary Creature — God Sorcerer VillainBRU

  Loki, the Deceiver creates token copies, feeding Harvestguard Alseids's ETB or copy payoff.
• Chain Reaction

  2RR

  SorceryR

  Chain Reaction deals damage to many targets, fueling Harvestguard Alseids's damage-payoff trigger.
• Jack of Hearts, Volatile Hero

  1RR

  Legendary Creature — Alien Human HeroR

  Jack of Hearts, Volatile Hero deals damage to many targets, fueling Harvestguard Alseids's damage-payoff trigger.
• City of Death

  2G

  Enchantment — SagaG

  City of Death creates token copies, feeding Harvestguard Alseids's ETB or copy payoff.
• Godo, Bandit Warlord

  5R

  Legendary Creature — Human BarbarianR

  Godo, Bandit Warlord grants an extra combat phase, enabling Harvestguard Alseids's combat-trigger payoff.
• All-Out Assault

  2RWB

  EnchantmentBRW

  All-Out Assault grants an extra combat phase, enabling Harvestguard Alseids's combat-trigger payoff.
• Extravagant Replication

  4UU

  EnchantmentU

  Extravagant Replication creates token copies, feeding Harvestguard Alseids's ETB or copy payoff.
• Exocrine

  X2R

  Creature — TyranidR

  Exocrine deals damage to many targets, fueling Harvestguard Alseids's damage-payoff trigger.
• Balthier and Fran

  1RG

  Legendary Creature — Human RabbitGR

  Balthier and Fran grants an extra combat phase, enabling Harvestguard Alseids's combat-trigger payoff.
• Bruce Banner // The Incredible Hulk

  U2RRGG

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

  Bruce Banner grants an extra combat phase, enabling Harvestguard Alseids's combat-trigger payoff.
• Cyclone

  2GG

  EnchantmentG

  Cyclone deals damage to many targets, fueling Harvestguard Alseids's damage-payoff trigger.
• Three Blind Mice

  2W

  Enchantment — SagaW

  Three Blind Mice creates token copies, feeding Harvestguard Alseids's ETB or copy payoff.
• Swooping Pteranodon

  3RW

  Creature — DinosaurRW

  Swooping Pteranodon produces broad damage that redirects through Harvestguard Alseids into something useful.
• Romana II

  3W

  Legendary Creature — Time Lord ScientistW

  Romana II creates token copies, feeding Harvestguard Alseids's ETB or copy payoff.
• Subterranean Tremors

  XR

  SorceryR

  Subterranean Tremors deals damage to many targets, fueling Harvestguard Alseids's damage-payoff trigger.
• Éomer, Marshal of Rohan

  2RR

  Legendary Creature — Human KnightR

  Éomer, Marshal of Rohan grants an extra combat phase, enabling Harvestguard Alseids's combat-trigger payoff.
• Fear of Missing Out

  1R

  Enchantment Creature — NightmareR

  Fear of Missing Out grants an extra combat phase, enabling Harvestguard Alseids's combat-trigger payoff.