Confidence:StrongSolidPlausibleTentativeSpeculative

• Sliver Queen

  WUBRG

  Legendary Creature — SliverBGRUW

  Both cards produce the same kind of effect (shared token subtype).
• Sliver Gravemother

  WUBRG

  Legendary Creature — SliverBGRUW

  Both cards produce the same kind of effect (shared token subtype).
• Hive Stirrings

  2W

  SorceryW

  Both cards produce the same kind of effect (shared token subtype).
• Brood Sliver

  4G

  Creature — SliverG

  Both cards produce the same kind of effect (shared token subtype).
• Rukarumel, Biologist

  WUBRG

  Legendary Creature — Human WizardBGRUW

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

  2

  Artifact Creature — SpellshaperC

  Both cards produce the same kind of effect (shared token subtype).
• Sliver Hive

  LandC

  Both cards produce the same kind of effect (shared token subtype).
• Mirror Room // Fractured Realm

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes Thrumming Hivepool's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Echoes of Eternity

  3CCC

  Kindred Enchantment — EldraziC

  Echoes of Eternity makes Thrumming Hivepool's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.