Confidence:StrongSolidPlausibleTentativeSpeculative

• Midnight Mayhem

  2RW

  SorceryRW

  Both cards produce the same kind of effect (shared token subtype).
• The Unluckiest Planeswalker

  2R

  Legendary PlaneswalkerR

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

  3WW

  Legendary Creature — Avatar WizardW

  Gandalf the White makes Gremlin Infestation's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Gremlin Tamer

  WU

  Creature — Human ScoutUW

  Both cards produce the same kind of effect (shared token subtype).
• Gimbal, Gremlin Prodigy

  2GUR

  Legendary Creature — Gremlin ArtificerGRU

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

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes Gremlin Infestation's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Razorkin Hordecaller

  4R

  Creature — Human Clown BerserkerR

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

  XXR

  SorceryR

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

  2RW

  EnchantmentRW

  Both cards produce the same kind of effect (shared token subtype).
• The Flame of Keld

  1R

  Enchantment — SagaR

  Gremlin Infestation deals damage, and The Flame of Keld makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• City on Fire

  5RRR

  EnchantmentR

  Gremlin Infestation deals damage, and City on Fire makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Fiery Emancipation

  3RRR

  EnchantmentR

  Gremlin Infestation deals damage, and Fiery Emancipation makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Sawhorn Nemesis

  3R

  Creature — DinosaurR

  Gremlin Infestation deals damage, and Sawhorn Nemesis makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Rem Karolus, Stalwart Slayer

  1RW

  Legendary Creature — Human KnightRW

  Gremlin Infestation deals damage, and Rem Karolus, Stalwart Slayer makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Twinflame Tyrant

  3RR

  Creature — DragonR

  Gremlin Infestation deals damage, and Twinflame Tyrant makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Tor Wauki the Younger

  3BR

  Legendary Creature — Human ArcherBR

  Gremlin Infestation deals damage, and Tor Wauki the Younger makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Torbran, Thane of Red Fell

  1RRR

  Legendary Creature — Dwarf NobleR

  Gremlin Infestation deals damage, and Torbran, Thane of Red Fell makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Gisela, Blade of Goldnight

  4RWW

  Legendary Creature — AngelRW

  Gremlin Infestation deals damage, and Gisela, Blade of Goldnight makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Spiked Corridor // Torture Pit

  3R3R

  Enchantment — Room // Enchantment — RoomR

  Gremlin Infestation deals damage, and Spiked Corridor makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Thor, Asgard's Avenger

  2RR

  Legendary Creature — God Warrior HeroR

  Gremlin Infestation deals damage, and Thor, Asgard's Avenger makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Lightning, Army of One

  1RW

  Legendary Creature — Human SoldierRW

  Gremlin Infestation deals damage, and Lightning, Army of One makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Solphim, Mayhem Dominus

  2RR

  Legendary Creature — Phyrexian HorrorR

  Gremlin Infestation deals damage, and Solphim, Mayhem Dominus makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Isengard Unleashed

  2RRR

  SorceryR

  Gremlin Infestation deals damage, and Isengard Unleashed makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Rankle and Torbran

  1BBRR

  Legendary Creature — Faerie DwarfBR

  Gremlin Infestation deals damage, and Rankle and Torbran makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Insult // Injury

  2R2R

  Sorcery // SorceryR

  Gremlin Infestation deals damage, and Insult makes each hit bigger — it doubles, triples or adds to the damage your sources deal.