Confidence:StrongSolidPlausibleTentativeSpeculative

• Oversimplify

  3GU

  SorceryGU

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

  3RW

  Legendary Planeswalker — QuintoriusRW

  Both cards trigger when a spell is cast — they fire together.
• Kasla, the Broken Halo

  3URW

  Legendary Creature — Angel AllyRUW

  Both cards trigger when a spell is cast — they fire together.
• Fin Fang Foom

  2RR

  Legendary Creature — Alien Dragon VillainR

  Both cards trigger when a spell is cast — they fire together.
• Professor Onyx

  4BB

  Legendary Planeswalker — LilianaB

  Both cards trigger when a spell is cast — they fire together.
• Zaffai, Thunder Conductor

  2UR

  Legendary Creature — Human ShamanRU

  Both cards trigger when a spell is cast — they fire together.
• Pink Horror

  3UR

  Creature — Demon HorrorRU

  Both cards trigger when a spell is cast — they fire together.
• Forum Necroscribe

  5B

  Creature — Troll WarlockB

  Both cards trigger when a spell is cast — they fire together.
• Ashling, Flame Dancer

  2RR

  Legendary Creature — Elemental ShamanR

  Both cards trigger when a spell is cast — they fire together.
• Aziza, Mage Tower Captain

  RW

  Legendary Creature — Djinn SorcererRW

  Both cards trigger when a spell is cast — they fire together.
• Tor Wauki the Younger

  3BR

  Legendary Creature — Human ArcherBR

  Both cards trigger when a spell is cast — they fire together.
• Sorin of House Markov // Sorin, Ravenous Neonate

  1B

  Legendary Creature — Human Noble // Legendary Planeswalker — SorinBW

  Both cards trigger when a spell is cast — they fire together.
• Harmonic Prodigy

  1R

  Creature — Human WizardR

  Harmonic Prodigy makes Deekah, Fractal Theorist's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Emil, Vastlands Roamer

  2G

  Legendary Creature — Elf DruidG

  Both cards produce the same kind of effect (shared token subtype).
• Surtr, Fiery Jötun

  3RR

  Legendary Creature — Giant God WarriorR

  Both cards trigger when a spell is cast — they fire together.
• Exhibition Tidecaller

  U

  Creature — Djinn WizardU

  Both cards trigger when a spell is cast — they fire together.
• Scytheclaw Raptor

  2R

  Creature — DinosaurR

  Both cards trigger when a spell is cast — they fire together.
• Earthshaker

  4RR

  Creature — SpiritR

  Both cards trigger when a spell is cast — they fire together.
• Conciliator's Duelist

  WWBB

  Creature — Kor WarlockBW

  Both cards trigger when a spell is cast — they fire together.
• Roiling Vortex

  1R

  EnchantmentR

  Both cards trigger when a spell is cast — they fire together.
• Urianger Augurelt

  WU

  Legendary Creature — Elf AdvisorUW

  Both cards trigger when a spell is cast — they fire together.
• Aetherflux Reservoir

  4

  ArtifactC

  Both cards trigger when a spell is cast — they fire together.
• 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).
• Orvar, the All-Form

  3U

  Legendary Creature — ShapeshifterU

  Both cards trigger when a spell is cast — they fire together.
• Annie Joins Up

  1RGW

  Legendary EnchantmentGRW

  Annie Joins Up makes Deekah, Fractal Theorist's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.