Confidence:StrongSolidPlausibleTentativeSpeculative

• Thassa's Oracle

  UU

  Creature — Merfolk WizardU

  Alternate win condition: one card wins on a state the other reliably produces (empty library, infinite life, etc.).
• Jace, Wielder of Mysteries

  1UUU

  Legendary Planeswalker — JaceU

  Alternate win condition: one card wins on a state the other reliably produces (empty library, infinite life, etc.).
• Doctor Doom, Unrivaled

  2BB

  Legendary Creature — Human Sorcerer VillainB

  Alternate win condition: one card wins on a state the other reliably produces (empty library, infinite life, etc.).
• Laboratory Maniac

  2U

  Creature — Human WizardU

  Alternate win condition: one card wins on a state the other reliably produces (empty library, infinite life, etc.).
• Baron Helmut Zemo

  BBB

  Legendary Creature — Human Noble VillainB

  Improvisation Capstone lets you cast/play from exile, enabling Baron Helmut Zemo's exile-recursion loop.
• Song of Creation

  1GUR

  EnchantmentGRU

  Improvisation Capstone lets you cast/play from exile, enabling Song of Creation's exile-recursion loop.
• Runaway Steam-Kin

  1R

  Creature — ElementalR

  Improvisation Capstone lets you cast/play from exile, enabling Runaway Steam-Kin's exile-recursion loop.
• Shanid, Sleepers' Scourge

  1RWB

  Legendary Creature — Human KnightBRW

  Improvisation Capstone lets you cast/play from exile, enabling Shanid, Sleepers' Scourge's exile-recursion loop.
• Quintorius Kand

  3RW

  Legendary Planeswalker — QuintoriusRW

  Improvisation Capstone lets you cast/play from exile, enabling Quintorius Kand's exile-recursion loop.
• Hydro-Man, Fluid Felon

  UU

  Legendary Creature — Elemental VillainU

  Improvisation Capstone lets you cast/play from exile, enabling Hydro-Man, Fluid Felon's exile-recursion loop.
• Lavinia, Foil to Conspiracy

  1W/UW/U

  Legendary Creature — Human DetectiveUW

  Improvisation Capstone lets you cast/play from exile, enabling Lavinia, Foil to Conspiracy's exile-recursion loop.
• Chandra, Dressed to Kill

  1RR

  Legendary Planeswalker — ChandraR

  Improvisation Capstone lets you cast/play from exile, enabling Chandra, Dressed to Kill's exile-recursion loop.
• Jodah, the Unifier

  WUBRG

  Legendary Creature — Human WizardBGRUW

  Improvisation Capstone lets you cast/play from exile, enabling Jodah, the Unifier's exile-recursion loop.
• Ramos, Dragon Engine

  6

  Legendary Artifact Creature — DragonBGRUW

  Improvisation Capstone lets you cast/play from exile, enabling Ramos, Dragon Engine's exile-recursion loop.
• Aetherflux Reservoir

  4

  ArtifactC

  Improvisation Capstone lets you cast/play from exile, enabling Aetherflux Reservoir's exile-recursion loop.
• Malicious Affliction

  BB

  InstantB

  Improvisation Capstone lets you cast/play from exile, enabling Malicious Affliction's exile-recursion loop.
• Stella Lee, Wild Card

  1UR

  Legendary Creature — Human RogueRU

  Improvisation Capstone lets you cast/play from exile, enabling Stella Lee, Wild Card's exile-recursion loop.
• Dash Hopes

  BB

  InstantB

  Improvisation Capstone lets you cast/play from exile, enabling Dash Hopes's exile-recursion loop.
• Malcolm, the Eyes

  UR

  Legendary Creature — Siren PirateRU

  Improvisation Capstone lets you cast/play from exile, enabling Malcolm, the Eyes's exile-recursion loop.
• Questing Druid // Seek the Beast

  1G1R

  Creature — Human Druid // Instant — AdventureGR

  Improvisation Capstone lets you cast/play from exile, enabling Questing Druid's exile-recursion loop.
• Reki, the History of Kamigawa

  2G

  Legendary Creature — Human ShamanG

  Improvisation Capstone lets you cast/play from exile, enabling Reki, the History of Kamigawa's exile-recursion loop.
• Infernal Sovereign

  4BB

  Creature — DemonB

  Improvisation Capstone lets you cast/play from exile, enabling Infernal Sovereign's exile-recursion loop.
• Deathbringer Liege

  2W/BW/BW/B

  Creature — HorrorBW

  Improvisation Capstone lets you cast/play from exile, enabling Deathbringer Liege's exile-recursion loop.
• The Beast, Deathless Prince

  2BR

  Legendary Creature — DemonBR

  Improvisation Capstone lets you cast/play from exile, enabling The Beast, Deathless Prince's exile-recursion loop.
• Arixmethes, Slumbering Isle

  2GU

  Legendary Creature — KrakenGU

  Improvisation Capstone lets you cast/play from exile, enabling Arixmethes, Slumbering Isle's exile-recursion loop.