Confidence:StrongSolidPlausibleTentativeSpeculative

• Mirror Room // Fractured Realm

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes Teferi's Puzzle Box'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 Teferi's Puzzle Box's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Faerie Mastermind

  1U

  Creature — Faerie RogueU

  Teferi's Puzzle Box draws a large number of cards, enabling Faerie Mastermind's draw-payoff or weaponized-draw effect.
• The Unagi of Kyoshi Island

  3UU

  Legendary Creature — SerpentU

  Teferi's Puzzle Box draws a large number of cards, enabling The Unagi of Kyoshi Island's draw-payoff or weaponized-draw effect.
• Ob Nixilis Reignited

  3BB

  Legendary Planeswalker — NixilisB

  Teferi's Puzzle Box draws a large number of cards, enabling Ob Nixilis Reignited's draw-payoff or weaponized-draw effect.
• Notion Thief✓

  2UB

  Creature — Human RogueBU

  Teferi's Puzzle Box draws a large number of cards, enabling Notion Thief's draw-payoff or weaponized-draw effect.
• Defacing Duskmage // Vandal's Edit

  WB1WB

  Creature — Dog Warlock // InstantBW

  Teferi's Puzzle Box draws a large number of cards, enabling Defacing Duskmage's draw-payoff or weaponized-draw effect.
• Hullbreacher✓

  2U

  Creature — Merfolk PirateU

  Teferi's Puzzle Box draws a large number of cards, enabling Hullbreacher's draw-payoff or weaponized-draw effect.
• The Council of Four

  3WU

  Legendary Creature — Human NobleUW

  Teferi's Puzzle Box draws a large number of cards, enabling The Council of Four's draw-payoff or weaponized-draw effect.
• Tataru Taru

  1W

  Legendary Creature — Dwarf AdvisorW

  Teferi's Puzzle Box draws a large number of cards, enabling Tataru Taru's draw-payoff or weaponized-draw effect.
• Faerie Vandal

  1U

  Creature — Faerie RogueU

  Teferi's Puzzle Box draws a large number of cards, enabling Faerie Vandal's draw-payoff or weaponized-draw effect.
• Kang, Temporal Tyrant

  2UB

  Legendary Creature — Human VillainBU

  Teferi's Puzzle Box draws a large number of cards, enabling Kang, Temporal Tyrant's draw-payoff or weaponized-draw effect.
• Starscream, Power Hungry // Starscream, Seeker Leader

  3B

  Legendary Artifact Creature — Robot // Legendary Artifact — VehicleB

  Teferi's Puzzle Box draws a large number of cards, enabling Starscream, Power Hungry's draw-payoff or weaponized-draw effect.
• Reg Barclay, Fidgety Fantasist

  2UR

  Legendary Creature — Human ArtificerRU

  Teferi's Puzzle Box draws a large number of cards, enabling Reg Barclay, Fidgety Fantasist's draw-payoff or weaponized-draw effect.
• Erudite Wizard

  2U

  Creature — Human WizardU

  Teferi's Puzzle Box draws a large number of cards, enabling Erudite Wizard's draw-payoff or weaponized-draw effect.