Confidence:StrongSolidPlausibleTentativeSpeculative

• The Millennium Calendar

  1

  Legendary ArtifactC

  Counter synergy: both cards work with the same kind of counters, so their effects stack in a counters deck. Not necessarily a closed loop on its own.
• Oversimplify

  3GU

  SorceryGU

  Both cards produce the same kind of effect (shared token subtype).
• Emil, Vastlands Roamer

  2G

  Legendary Creature — Elf DruidG

  Both cards produce the same kind of effect (shared token subtype).
• Kianne, Dean of Substance // Imbraham, Dean of Theory

  2G2UU

  Legendary Creature — Elf Druid // Legendary Creature — Bird WizardGU

  Both cards produce the same kind of effect (shared token subtype).
• Deekah, Fractal Theorist

  4U

  Legendary Creature — Human WizardU

  Both cards produce the same kind of effect (shared token subtype).
• Ambitious Augmenter

  G

  Creature — Turtle WizardG

  Both cards produce the same kind of effect (shared token subtype).
• Mirror Room // Fractured Realm

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes Paradox Zone's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Kasmina, Enigma Sage

  1GU

  Legendary Planeswalker — KasminaGU

  Both cards produce the same kind of effect (shared token subtype).
• Primo, the Unbounded

  XGGU

  Legendary Creature — Fractal WolfGU

  Both cards produce the same kind of effect (shared token subtype).
• Jadzi, Steward of Fate // Oracle's Gift

  2UXXU

  Legendary Creature — Human Wizard // SorceryU

  Both cards produce the same kind of effect (shared token subtype).
• Lattice Library

  XGG

  EnchantmentG

  Both cards produce the same kind of effect (shared token subtype).
• Zimone, All-Questioning

  1GU

  Legendary Creature — Human WizardGU

  Both cards produce the same kind of effect (shared token subtype).
• Berta, Wise Extrapolator

  2GU

  Legendary Creature — Frog DruidGU

  Both cards produce the same kind of effect (shared token subtype).
• Tekuthal, Inquiry Dominus

  2UU

  Legendary Creature — Phyrexian HorrorU

  Counter synergy: both cards work with the same kind of counters, so their effects stack in a counters deck. Not necessarily a closed loop on its own.
• Captain Marvel, Apex Avenger

  5RW

  Legendary Creature — Human Kree HeroRW

  Counter synergy: both cards work with the same kind of counters, so their effects stack in a counters deck. Not necessarily a closed loop on its own.
• Fractal Harness

  X2G

  Artifact — EquipmentG

  Both cards produce the same kind of effect (shared token subtype).
• Fractal Tender

  3GU

  Creature — Elf WizardGU

  Both cards produce the same kind of effect (shared token subtype).
• Manifestation Sage

  G/UG/UG/UG/U

  Creature — Human WizardGU

  Both cards produce the same kind of effect (shared token subtype).
• Biomathematician

  1GU

  Creature — Human WizardGU

  Both cards produce the same kind of effect (shared token subtype).
• Fractal Anomaly

  U

  InstantU

  Both cards produce the same kind of effect (shared token subtype).
• Additive Evolution

  3GG

  EnchantmentG

  Both cards produce the same kind of effect (shared token subtype).
• Sequence Engine

  2G

  ArtifactG

  Both cards produce the same kind of effect (shared token subtype).
• Wild Hypothesis

  XG

  SorceryG

  Both cards produce the same kind of effect (shared token subtype).
• Serpentine Curve

  3U

  SorceryU

  Both cards produce the same kind of effect (shared token subtype).
• Leyline Invocation

  5G

  SorceryG

  Both cards produce the same kind of effect (shared token subtype).