Confidence:StrongSolidPlausibleTentativeSpeculative

• Clock of Omens

  4

  ArtifactC

  Token-fuel engine: one side keeps producing untapped tokens that pay the other's tap costs, and the output feeds the loop again — Squirrel Nest with Earthcraft is the classic shape.
• Stone Idol Trap

  5R

  Instant — TrapR

  Both cards produce the same kind of effect (shared token subtype).
• Intellectual Offering

  4U

  InstantU

  Intellectual Offering untaps all (or many) permanents, refreshing Stone Idol Generator's tap activation.
• Unstoppable Plan

  2U

  EnchantmentU

  Unstoppable Plan untaps all (or many) permanents, refreshing Stone Idol Generator's tap activation.
• Seedborn Muse

  3GG

  Creature — SpiritG

  Seedborn Muse untaps all (or many) permanents, refreshing Stone Idol Generator's tap activation.
• Unwinding Clock

  4

  ArtifactC

  Unwinding Clock untaps all (or many) permanents, refreshing Stone Idol Generator's tap activation.
• Paradox Engine

  5

  Legendary ArtifactC

  Paradox Engine untaps all (or many) permanents, refreshing Stone Idol Generator's tap activation.
• Dramatic Reversal

  1U

  InstantU

  Dramatic Reversal untaps all (or many) permanents, refreshing Stone Idol Generator's tap activation.
• Skitterbeam Battalion

  9

  Artifact Creature — ConstructR

  Both cards produce the same kind of effect (shared token subtype).
• Gemini Engine

  6

  Artifact Creature — ConstructC

  Both cards produce the same kind of effect (shared token subtype).
• Blinkmoth Infusion

  12UU

  InstantU

  Blinkmoth Infusion untaps all (or many) permanents, refreshing Stone Idol Generator's tap activation.
• Nascent Metamorph

  1U

  Creature — ShapeshifterU

  Both cards trigger when a permanent attacks — they fire together.
• Zur the Enchanter

  1WUB

  Legendary Creature — Human WizardBUW

  Both cards trigger when a permanent attacks — they fire together.
• Agrus Kos, Spirit of Justice

  2RW

  Legendary Creature — Spirit DetectiveRW

  Both cards trigger when a permanent attacks — they fire together.
• Bilbo, Thief in the Night

  1U

  Legendary Creature — Halfling RogueU

  Both cards trigger when a permanent attacks — they fire together.
• Sokenzan Smelter

  1R

  Creature — Goblin ArtificerR

  Both cards produce the same kind of effect (shared token subtype).
• Karn, Scion of Urza

  4

  Legendary Planeswalker — KarnC

  Both cards produce the same kind of effect (shared token subtype).
• Demonic Covenant

  4BB

  Kindred Enchantment — DemonB

  Both cards trigger when a permanent attacks — they fire together.
• Ambling Stormshell

  3UU

  Creature — TurtleU

  Both cards trigger when a permanent attacks — they fire together.
• Phlage, Titan of Fire's Fury

  1RW

  Legendary Creature — Elder GiantRW

  Both cards trigger when a permanent attacks — they fire together.
• Obsessive Pursuit

  1B

  EnchantmentB

  Both cards trigger when a permanent attacks — they fire together.
• Dreadhorde Arcanist

  1R

  Creature — Zombie WizardR

  Both cards trigger when a permanent attacks — they fire together.
• Banon, the Returners' Leader

  RW

  Legendary Creature — Human Cleric RebelRW

  Both cards trigger when a permanent attacks — they fire together.
• Garruk, Apex Predator

  5BG

  Legendary Planeswalker — GarrukBG

  Both cards trigger when a permanent attacks — they fire together.
• Bruse Tarl, Roving Rancher

  2RW

  Legendary Creature — Human WarriorRW

  Both cards trigger when a permanent attacks — they fire together.