Confidence:StrongSolidPlausibleTentativeSpeculative

• Mirror Room // Fractured Realm

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes Malignant Growth's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Consecrated Sphinx

  4UU

  Creature — SphinxU

  Malignant Growth draws a large number of cards, enabling Consecrated Sphinx's draw-payoff or weaponized-draw effect.
• Faerie Mastermind

  1U

  Creature — Faerie RogueU

  Malignant Growth draws a large number of cards, enabling Faerie Mastermind's draw-payoff or weaponized-draw effect.
• Stinkweed Imp

  2B

  Creature — ImpB

  Malignant Growth draws a large number of cards, enabling Stinkweed Imp's draw-payoff or weaponized-draw effect.
• Kid Loki

  U

  Legendary Creature — God Hero VillainU

  Malignant Growth draws a large number of cards, enabling Kid Loki's draw-payoff or weaponized-draw effect.
• Toothy, Imaginary Friend

  3U

  Legendary Creature — IllusionU

  Malignant Growth draws a large number of cards, enabling Toothy, Imaginary Friend's draw-payoff or weaponized-draw effect.
• Red Ghost, Intangible Genius

  2UR

  Legendary Creature — Human Scientist VillainRU

  Malignant Growth draws a large number of cards, enabling Red Ghost, Intangible Genius's draw-payoff or weaponized-draw effect.
• Sheoldred, the Apocalypse

  2BB

  Legendary Creature — Phyrexian PraetorB

  Malignant Growth draws a large number of cards, enabling Sheoldred, the Apocalypse's draw-payoff or weaponized-draw effect.
• The Unagi of Kyoshi Island

  3UU

  Legendary Creature — SerpentU

  Malignant Growth draws a large number of cards, enabling The Unagi of Kyoshi Island's draw-payoff or weaponized-draw effect.
• City on Fire

  5RRR

  EnchantmentR

  Malignant Growth 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

  Malignant Growth deals damage, and Fiery Emancipation makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Niv-Mizzet, Parun

  UUURRR

  Legendary Creature — Dragon WizardRU

  Malignant Growth draws a large number of cards, enabling Niv-Mizzet, Parun's draw-payoff or weaponized-draw effect.
• Sawhorn Nemesis

  3R

  Creature — DinosaurR

  Malignant Growth deals damage, and Sawhorn Nemesis makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Ob Nixilis Reignited

  3BB

  Legendary Planeswalker — NixilisB

  Malignant Growth draws a large number of cards, enabling Ob Nixilis Reignited's draw-payoff or weaponized-draw effect.
• Rem Karolus, Stalwart Slayer

  1RW

  Legendary Creature — Human KnightRW

  Malignant Growth deals damage, and Rem Karolus, Stalwart Slayer makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Teferi, Hero of Dominaria

  3WU

  Legendary Planeswalker — TeferiUW

  Malignant Growth draws a large number of cards, enabling Teferi, Hero of Dominaria's draw-payoff or weaponized-draw effect.
• Notion Thief

  2UB

  Creature — Human RogueBU

  Malignant Growth draws a large number of cards, enabling Notion Thief's draw-payoff or weaponized-draw effect.
• Twinflame Tyrant

  3RR

  Creature — DragonR

  Malignant Growth 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

  Malignant Growth deals damage, and Tor Wauki the Younger makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
• Defacing Duskmage // Vandal's Edit

  WB1WB

  Creature — Dog Warlock // InstantBW

  Malignant Growth draws a large number of cards, enabling Defacing Duskmage's draw-payoff or weaponized-draw effect.
• Jolrael, Mwonvuli Recluse

  1G

  Legendary Creature — Human DruidG

  Malignant Growth draws a large number of cards, enabling Jolrael, Mwonvuli Recluse's draw-payoff or weaponized-draw effect.
• Necroplasm

  1BB

  Creature — OozeB

  Malignant Growth draws a large number of cards, enabling Necroplasm's draw-payoff or weaponized-draw effect.
• Mischievous Mystic

  1U

  Creature — Human WizardU

  Malignant Growth draws a large number of cards, enabling Mischievous Mystic's draw-payoff or weaponized-draw effect.
• Hullbreacher

  2U

  Creature — Merfolk PirateU

  Malignant Growth draws a large number of cards, enabling Hullbreacher's draw-payoff or weaponized-draw effect.
• Black Widow, Agile Avenger

  1RW

  Legendary Creature — Human Spy HeroRW

  Malignant Growth draws a large number of cards, enabling Black Widow, Agile Avenger's draw-payoff or weaponized-draw effect.