Confidence:StrongSolidPlausibleTentativeSpeculative

• Kasla, the Broken Halo

  3URW

  Legendary Creature — Angel AllyRUW

  Both cards trigger when you cast a spell — they fire together.
• Song of the Worldsoul

  4WW

  EnchantmentW

  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.
• Myr Battlesphere

  7

  Artifact Creature — Myr ConstructC

  Both cards produce the same kind of effect (shared token subtype).
• Witch-Maw Nephilim

  GWUB

  Creature — NephilimBGUW

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

  2

  Artifact Creature — Phyrexian MyrC

  Both cards produce the same kind of effect (shared token subtype).
• Inexorable Tide

  3UU

  EnchantmentU

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

  5

  ArtifactC

  Both cards produce the same kind of effect (shared token subtype).
• Myr Propagator

  3

  Artifact Creature — MyrC

  Both cards produce the same kind of effect (shared token subtype).
• Black Lotus

  0

  ArtifactC

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

  0

  ArtifactC

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

  0

  ArtifactG

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

  0

  ArtifactB

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

  0

  ArtifactW

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

  0

  ArtifactR

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

  0

  ArtifactU

  Mox Sapphire is a free spell, so Myrsmith'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.
• Riku of Many Paths

  GUR

  Legendary Creature — Human WizardGRU

  Both cards trigger when you cast a spell — they fire together.
• Baron Helmut Zemo

  BBB

  Legendary Creature — Human Noble VillainB

  Both cards trigger when you cast a spell — they fire together.
• Song of Creation

  1GUR

  EnchantmentGRU

  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.
• Mercurial Spelldancer

  1U

  Creature — Phyrexian RogueU

  Both cards trigger when you cast a spell — they fire together.
• Geometer's Arthropod

  GU

  Creature — Fractal CrabGU

  Both cards trigger when you cast a spell — they fire together.
• Shanid, Sleepers' Scourge

  1RWB

  Legendary Creature — Human KnightBRW

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