Confidence:StrongSolidPlausibleTentativeSpeculative

• Helm of the Host

  4

  Legendary Artifact — EquipmentC

  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.
• Rionya, Fire Dancer

  3RR

  Legendary Creature — Human WizardR

  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.
• The Jolly Balloon Man

  1RW

  Legendary Creature — Human ClownRW

  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.
• Saheeli, the Sun's Brilliance

  UR

  Legendary Creature — Human ArtificerRU

  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.
• Tempestra, Dame of Games

  1R

  Legendary Creature — Elemental IllusionR

  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.
• Orthion, Hero of Lavabrink

  3R

  Legendary Creature — Human SoldierR

  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.
• Splinter Twin

  2RR

  Enchantment — AuraR

  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.
• Jaxis, the Troublemaker

  3R

  Legendary Creature — Human WarriorR

  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.
• Verdant Dread

  1G

  EnchantmentG

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

  1G

  EnchantmentG

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

  BBB

  Legendary Creature — Human Noble VillainB

  Baron Helmut Zemo creates token copies, feeding Sheoldred's Assimilator's ETB or copy payoff.
• The Soul Stone

  1B

  Legendary Artifact — Infinity StoneB

  The Soul Stone returns creatures from the graveyard to the battlefield, re-firing Sheoldred's Assimilator's enter-the-battlefield effect.
• Sanguine Soothsayer

  1B

  Creature — Bat ClericB

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

  1B

  EnchantmentB

  Both cards trigger when a permanent attacks — they fire together.
• Sheoldred, Whispering One

  5BB

  Legendary Creature — Phyrexian PraetorB

  Sheoldred, Whispering One returns creatures from the graveyard to the battlefield, re-firing Sheoldred's Assimilator's enter-the-battlefield effect.
• Virtue of Persistence // Locthwain Scorn

  5BB1B

  Enchantment // Sorcery — AdventureB

  Virtue of Persistence returns creatures from the graveyard to the battlefield, re-firing Sheoldred's Assimilator's enter-the-battlefield effect.
• Tinybones Joins Up

  B

  Legendary EnchantmentB

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

  G

  Creature — InsectG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Gallia of the Endless Dance

  RG

  Legendary Creature — SatyrGR

  Both cards trigger when a permanent attacks — they fire together.
• Solitary Defiance

  2U

  EnchantmentU

  Both cards trigger when a permanent attacks — they fire together.
• Asmodeus the Archfiend

  4BB

  Legendary Creature — Devil GodB

  Asmodeus the Archfiend bounces a permanent, enabling Sheoldred's Assimilator's recast / spell-cast trigger.
• A-Winota, Joiner of Forces

  2RW

  Legendary Creature — Human WarriorRW

  Both cards trigger when a permanent attacks — they fire together.
• Starfall Invocation

  3WW

  SorceryW

  Starfall Invocation returns creatures from the graveyard to the battlefield, re-firing Sheoldred's Assimilator's enter-the-battlefield effect.
• Emperor Apatzec Intli IV

  RGW

  Legendary Creature — Human NobleGRW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Zero Point Ballad

  XB

  SorceryB

  Zero Point Ballad returns creatures from the graveyard to the battlefield, re-firing Sheoldred's Assimilator's enter-the-battlefield effect.