Confidence:StrongSolidPlausibleTentativeSpeculative

• Sarkhan's Unsealing

  3R

  EnchantmentR

  Both cards trigger when a spell is cast — they fire together.
• Isshin, Two Heavens as One

  RWB

  Legendary Creature — Human SamuraiBRW

  Isshin, Two Heavens as One makes Mastermind Plum's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Thor, God of Thunder

  3RR

  Legendary Creature — God Warrior HeroR

  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.
• Windcrag Siege

  1RW

  EnchantmentRW

  Windcrag Siege makes Mastermind Plum's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• 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.
• Kykar, Zephyr Awakener

  2WU

  Legendary Creature — Bird WizardUW

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

  4R/P

  ArtifactR

  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.
• Silverback Elder

  2GGG

  Creature — Ape ShamanG

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

  1R

  Creature — Human WizardR

  Harmonic Prodigy makes Mastermind Plum's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Summon: Good King Mog XII

  4W

  Enchantment Creature — Saga MoogleW

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

  2W

  Creature — Human ArtificerW

  Both cards trigger when a spell is cast — they fire together.
• Surtr, Fiery Jötun

  3RR

  Legendary Creature — Giant God WarriorR

  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.
• Wulfgar of Icewind Dale

  3RG

  Legendary Creature — Human BarbarianGR

  Wulfgar of Icewind Dale makes Mastermind Plum's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Loki, God of Lies

  1RR

  Legendary Creature — God Sorcerer VillainR

  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.
• Kozilek's Return

  2R

  InstantR

  Both cards trigger when a spell is cast — they fire together.
• The Legend of Yangchen // Avatar Yangchen

  3WW

  Enchantment — Saga // Legendary Creature — AvatarW

  Both cards trigger when a spell is cast — they fire together.
• Delney, Streetwise Lookout

  2W

  Legendary Creature — Human ScoutW

  Delney, Streetwise Lookout makes Mastermind Plum's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Breeches, the Blastmaker

  1UR

  Legendary Creature — Goblin PirateRU

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

  3U

  Legendary Creature — ShapeshifterU

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