Confidence:StrongSolidPlausibleTentativeSpeculative

• Summon: Good King Mog XII

  4W

  Enchantment Creature — Saga MoogleW

  Both cards trigger when you cast a spell — they fire together.
• Dreamtide Whale

  2U

  Creature — WhaleU

  Both cards trigger when you cast a spell — they fire together.
• Loki, God of Lies

  1RR

  Legendary Creature — God Sorcerer VillainR

  Both cards trigger when you cast a spell — they fire together.
• The Locust God

  4UR

  Legendary Creature — GodRU

  Draw pair: both cards engage with card draw. With a damage-or-draw trigger between them they form a draw engine.
• Orvar, the All-Form

  3U

  Legendary Creature — ShapeshifterU

  Both cards trigger when you cast a spell — they fire together.
• Flux Channeler

  2U

  Creature — Human WizardU

  Both cards trigger when you cast a spell — they fire together.
• Blightcaster

  3B

  Creature — Human WizardB

  Both cards trigger when you cast a spell — they fire together.
• Flayer of Loyalties

  8CC

  Creature — EldraziC

  Both cards trigger when you cast a spell — they fire together.
• Skyfire Kirin

  2RR

  Legendary Creature — Kirin SpiritR

  Both cards trigger when you cast a spell — they fire together.
• Akroan Conscriptor

  4R

  Creature — Human ShamanR

  Both cards trigger when you cast a spell — they fire together.
• Thorntooth Witch

  5B

  Creature — Treefolk ShamanB

  Both cards trigger when you cast a spell — they fire together.
• Vesuvan Duplimancy

  3U

  EnchantmentU

  Both cards trigger when you cast a spell — they fire together.
• Black Lotus

  0

  ArtifactC

  Black Lotus is a free spell, so Horn of Plenty's cast trigger fires for nothing.
• Mana Crypt

  0

  ArtifactC

  Mana Crypt is a free spell, so Horn of Plenty's cast trigger fires for nothing.
• Mox Emerald

  0

  ArtifactG

  Mox Emerald is a free spell, so Horn of Plenty's cast trigger fires for nothing.
• Mox Jet

  0

  ArtifactB

  Mox Jet is a free spell, so Horn of Plenty's cast trigger fires for nothing.
• Mox Pearl

  0

  ArtifactW

  Mox Pearl is a free spell, so Horn of Plenty's cast trigger fires for nothing.
• Mox Ruby

  0

  ArtifactR

  Mox Ruby is a free spell, so Horn of Plenty's cast trigger fires for nothing.
• Mox Sapphire

  0

  ArtifactU

  Mox Sapphire is a free spell, so Horn of Plenty's cast trigger fires for nothing.
• Ugin, Eye of the Storms

  7

  Legendary Planeswalker — UginC

  Both cards trigger when you cast a spell — they fire together.
• Esper Sentinel

  W

  Artifact Creature — Human SoldierW

  Both cards trigger when you cast a spell — they fire together.
• Riku of Many Paths

  GUR

  Legendary Creature — Human WizardGRU

  Both cards trigger when you cast a spell — they fire together.
• Runaway Steam-Kin

  1R

  Creature — ElementalR

  Both cards trigger when you cast a spell — they fire together.
• Jenson Carthalion, Druid Exile

  GW

  Legendary Creature — Human DruidBGRUW

  Both cards trigger when you cast a spell — they fire together.
• God-Eternal Oketra

  3WW

  Legendary Creature — Zombie GodW

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