Confidence:StrongSolidPlausibleTentativeSpeculative

• Baron Helmut Zemo

  BBB

  Legendary Creature — Human Noble VillainB

  Horde of Notions lets you cast/play from the graveyard, enabling Baron Helmut Zemo's recursion loop.
• Song of Creation

  1GUR

  EnchantmentGRU

  Horde of Notions lets you cast/play from the graveyard, enabling Song of Creation's recursion loop.
• Shanid, Sleepers' Scourge

  1RWB

  Legendary Creature — Human KnightBRW

  Horde of Notions lets you cast/play from the graveyard, enabling Shanid, Sleepers' Scourge's recursion loop.
• Hydro-Man, Fluid Felon

  UU

  Legendary Creature — Elemental VillainU

  Horde of Notions lets you cast/play from the graveyard, enabling Hydro-Man, Fluid Felon's recursion loop.
• Lavinia, Foil to Conspiracy

  1W/UW/U

  Legendary Creature — Human DetectiveUW

  Horde of Notions lets you cast/play from the graveyard, enabling Lavinia, Foil to Conspiracy's recursion loop.
• Jodah, the Unifier

  WUBRG

  Legendary Creature — Human WizardBGRUW

  Horde of Notions lets you cast/play from the graveyard, enabling Jodah, the Unifier's recursion loop.
• Aetherflux Reservoir

  4

  ArtifactC

  Horde of Notions lets you cast/play from the graveyard, enabling Aetherflux Reservoir's recursion loop.
• Malicious Affliction

  BB

  InstantB

  Horde of Notions lets you cast/play from the graveyard, enabling Malicious Affliction's recursion loop.
• Innocuous Researcher

  3G

  Creature — Centaur DetectiveG

  Innocuous Researcher untaps lands, fueling Horde of Notions's mana-hungry effect.
• Fiery Gambit

  2R

  SorceryR

  Fiery Gambit untaps lands, fueling Horde of Notions's mana-hungry effect.
• Stella Lee, Wild Card

  1UR

  Legendary Creature — Human RogueRU

  Horde of Notions lets you cast/play from the graveyard, enabling Stella Lee, Wild Card's recursion loop.
• Dash Hopes

  BB

  InstantB

  Horde of Notions lets you cast/play from the graveyard, enabling Dash Hopes's recursion loop.
• Malcolm, the Eyes

  UR

  Legendary Creature — Siren PirateRU

  Horde of Notions lets you cast/play from the graveyard, enabling Malcolm, the Eyes's recursion loop.
• Questing Druid // Seek the Beast

  1G1R

  Creature — Human Druid // Instant — AdventureGR

  Horde of Notions lets you cast/play from the graveyard, enabling Questing Druid's recursion loop.
• Reki, the History of Kamigawa

  2G

  Legendary Creature — Human ShamanG

  Horde of Notions lets you cast/play from the graveyard, enabling Reki, the History of Kamigawa's recursion loop.
• Infernal Sovereign

  4BB

  Creature — DemonB

  Horde of Notions lets you cast/play from the graveyard, enabling Infernal Sovereign's recursion loop.
• Deathbringer Liege

  2W/BW/BW/B

  Creature — HorrorBW

  Horde of Notions lets you cast/play from the graveyard, enabling Deathbringer Liege's recursion loop.
• Time Spiral

  4UU

  SorceryU

  Time Spiral untaps lands, fueling Horde of Notions's mana-hungry effect.
• Nissa, Vastwood Seer // Nissa, Sage Animist

  2G

  Legendary Creature — Elf Scout // Legendary Planeswalker — NissaG

  Nissa, Vastwood Seer untaps lands, fueling Horde of Notions's mana-hungry effect.
• The Circle of Loyalty

  4WW

  Legendary ArtifactW

  Horde of Notions lets you cast/play from the graveyard, enabling The Circle of Loyalty's recursion loop.
• Moderation

  1WU

  EnchantmentUW

  Horde of Notions lets you cast/play from the graveyard, enabling Moderation's recursion loop.
• Merrow Bonegnawer

  B

  Creature — Merfolk RogueB

  Horde of Notions lets you cast/play from the graveyard, enabling Merrow Bonegnawer's recursion loop.
• Neerdiv, Devious Diver

  2U

  Legendary Creature — Merfolk RogueU

  Horde of Notions lets you cast/play from the graveyard, enabling Neerdiv, Devious Diver's recursion loop.
• Venat, Heart of Hydaelyn // Hydaelyn, the Mothercrystal

  1WW

  Legendary Creature — Elder Wizard // Legendary Creature — GodW

  Horde of Notions lets you cast/play from the graveyard, enabling Venat, Heart of Hydaelyn's recursion loop.
• Norin the Wary

  R

  Legendary Creature — Human WarriorR

  Horde of Notions lets you cast/play from the graveyard, enabling Norin the Wary's recursion loop.