Confidence:StrongSolidPlausibleTentativeSpeculative

• Emry, Lurker of the Loch

  2U

  Legendary Creature — Merfolk WizardU

  Stonecoil Serpent is a free artifact, so Emry, Lurker of the Loch's affinity cost drops the moment it is on the battlefield.
• Voyage Home

  5WU

  SorceryUW

  Stonecoil Serpent is a free artifact, so Voyage Home's affinity cost drops the moment it is on the battlefield.
• Chiss-Goria, Forge Tyrant

  6RRR

  Legendary Creature — DragonR

  Stonecoil Serpent is a free artifact, so Chiss-Goria, Forge Tyrant's affinity cost drops the moment it is on the battlefield.
• Refurbished Familiar

  3B

  Artifact Creature — Zombie RatB

  Stonecoil Serpent is a free artifact, so Refurbished Familiar's affinity cost drops the moment it is on the battlefield.
• Assert Authority

  5UU

  InstantU

  Stonecoil Serpent is a free artifact, so Assert Authority's affinity cost drops the moment it is on the battlefield.
• Urza, Chief Artificer

  3WUB

  Legendary Creature — Human ArtificerBUW

  Stonecoil Serpent is a free artifact, so Urza, Chief Artificer's affinity cost drops the moment it is on the battlefield.
• Thoughtcast

  4U

  SorceryU

  Stonecoil Serpent is a free artifact, so Thoughtcast's affinity cost drops the moment it is on the battlefield.
• Thought Monitor

  6U

  Artifact Creature — ConstructU

  Stonecoil Serpent is a free artifact, so Thought Monitor's affinity cost drops the moment it is on the battlefield.
• Sojourner's Companion

  7

  Artifact Creature — SalamanderC

  Stonecoil Serpent is a free artifact, so Sojourner's Companion's affinity cost drops the moment it is on the battlefield.
• Demonic Junker

  6B

  Artifact — VehicleB

  Stonecoil Serpent is a free artifact, so Demonic Junker's affinity cost drops the moment it is on the battlefield.
• Ethersworn Sphinx

  7WU

  Artifact Creature — SphinxUW

  Stonecoil Serpent is a free artifact, so Ethersworn Sphinx's affinity cost drops the moment it is on the battlefield.
• Imskir Iron-Eater

  6BR

  Legendary Creature — DemonBR

  Stonecoil Serpent is a free artifact, so Imskir Iron-Eater's affinity cost drops the moment it is on the battlefield.
• Furnace Dragon

  6RRR

  Creature — DragonR

  Stonecoil Serpent is a free artifact, so Furnace Dragon's affinity cost drops the moment it is on the battlefield.
• Memory Guardian

  4U

  Artifact Creature — Robot ArtificerU

  Stonecoil Serpent is a free artifact, so Memory Guardian's affinity cost drops the moment it is on the battlefield.
• Into Thin Air

  5U

  InstantU

  Stonecoil Serpent is a free artifact, so Into Thin Air's affinity cost drops the moment it is on the battlefield.
• Gearseeker Serpent

  5UU

  Creature — SerpentU

  Stonecoil Serpent is a free artifact, so Gearseeker Serpent's affinity cost drops the moment it is on the battlefield.
• Utrom Monitor

  4U

  Artifact Creature — Utrom ScientistU

  Stonecoil Serpent is a free artifact, so Utrom Monitor's affinity cost drops the moment it is on the battlefield.
• Furnace Hellkite

  5RR

  Artifact Creature — DragonR

  Stonecoil Serpent is a free artifact, so Furnace Hellkite's affinity cost drops the moment it is on the battlefield.
• Frogmyr Enforcer

  7

  Artifact Creature — Frog MyrR

  Stonecoil Serpent is a free artifact, so Frogmyr Enforcer's affinity cost drops the moment it is on the battlefield.
• Panther Robot

  10

  Artifact Creature — Cat RobotC

  Stonecoil Serpent is a free artifact, so Panther Robot's affinity cost drops the moment it is on the battlefield.
• Plated Onslaught

  3WW

  InstantW

  Stonecoil Serpent is a free artifact, so Plated Onslaught's affinity cost drops the moment it is on the battlefield.
• Valkyrie Aerial Unit

  5UU

  Artifact Creature — ConstructU

  Stonecoil Serpent is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Steelfin Whale

  5U

  Creature — WhaleU

  Stonecoil Serpent is a free artifact, so Steelfin Whale's affinity cost drops the moment it is on the battlefield.
• Mycosynth Golem

  11

  Artifact Creature — GolemC

  Stonecoil Serpent is a free artifact, so Mycosynth Golem's affinity cost drops the moment it is on the battlefield.
• Quicksilver Behemoth

  6U

  Creature — BeastU

  Stonecoil Serpent is a free artifact, so Quicksilver Behemoth's affinity cost drops the moment it is on the battlefield.