Confidence:StrongSolidPlausibleTentativeSpeculative

• U.S.S. Stargazer, Here and There

  3

  Legendary Artifact — SpacecraftC

  Both cards produce the same kind of effect (shared token subtype).
• Minn, Wily Illusionist

  1UU

  Legendary Creature — Gnome WizardU

  Both cards produce the same kind of effect (shared token subtype).
• Mysterio, Master of Illusion

  3U

  Legendary Creature — Human VillainU

  Both cards produce the same kind of effect (shared token subtype).
• Holo-Engineer

  2GG

  Creature — Human ArtificerG

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

  3U

  Creature — Human WizardU

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

  4UU

  Legendary Planeswalker — MordenkainenU

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

  2RR

  Creature — DragonR

  Both cards produce the same kind of effect (shared token subtype).
• Sphinx of False Conclusions

  2UU

  Creature — Sphinx IllusionU

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

  4GG

  Creature — Hirogen WarriorG

  Both cards produce the same kind of effect (shared token subtype).
• Adversary by Algorithm

  2G

  SorceryG

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

  3U

  Creature — IllusionU

  Both cards produce the same kind of effect (shared token subtype).
• Jace, Cunning Castaway

  1UU

  Legendary Planeswalker — JaceU

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

  3U

  Creature — Human NinjaU

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

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes The Theorist, Jace Beleren's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Inscription of Insight

  3U

  SorceryU

  Both cards produce the same kind of effect (shared token subtype).
• Meloku the Clouded Mirror

  4U

  Legendary Creature — Moonfolk WizardU

  Both cards produce the same kind of effect (shared token subtype).
• Summoner's Bane

  2UU

  InstantU

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

  3UU

  Creature — OctopusU

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

  1U

  Creature — Illusion WarriorU

  Both cards produce the same kind of effect (shared token subtype).
• Mysterio's Mirage

  2U

  EnchantmentU

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

  3

  ArtifactC

  The Theorist, Jace Beleren has activated abilities that aren't mana abilities, fueling Rings of Brighthearth's activation-trigger.