Confidence:StrongSolidPlausibleTentativeSpeculative

• Combat Calligrapher

  3W

  Creature — Bird ClericW

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

  R

  Creature — DragonR

  Both cards trigger when a permanent attacks — they fire together.
• Isshin, Two Heavens as One

  RWB

  Legendary Creature — Human SamuraiBRW

  Isshin, Two Heavens as One makes Riddlekeeper's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Windcrag Siege

  1RW

  EnchantmentRW

  Windcrag Siege makes Riddlekeeper's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Aqueous Form

  U

  Enchantment — AuraU

  Both cards trigger when a permanent attacks — they fire together.
• Norin the Wary

  R

  Legendary Creature — Human WarriorR

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

  6

  ArtifactC

  Both cards trigger when a permanent attacks — they fire together.
• MacCready, Lamplight Mayor

  WB

  Legendary Creature — Human AdvisorBW

  Both cards trigger when a permanent attacks — they fire together.
• Invasion of New Capenna // Holy Frazzle-Cannon

  WB

  Battle — Siege // Artifact — EquipmentBW

  Both cards trigger when a permanent attacks — they fire together.
• Sarkhan the Masterless

  3RR

  Legendary Planeswalker — SarkhanR

  Both cards trigger when a permanent attacks — they fire together.
• Jolene, the Plunder Queen

  2RG

  Legendary Creature — Human WarriorGR

  Both cards trigger when a permanent attacks — they fire together.
• Storm, Queen of Wakanda

  3GW

  Legendary Creature — Mutant Noble HeroGW

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

  3R

  Creature — Djinn PirateR

  Both cards trigger when a permanent attacks — they fire together.
• Wulfgar of Icewind Dale

  3RG

  Legendary Creature — Human BarbarianGR

  Wulfgar of Icewind Dale makes Riddlekeeper's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Raffine, Scheming Seer

  WUB

  Legendary Creature — Sphinx DemonBUW

  Both cards trigger when a permanent attacks — they fire together.
• Ellie, Brick Master

  1R

  Legendary Creature — Human SurvivorR

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

  2RW

  EnchantmentRW

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

  1GG

  EnchantmentG

  Both cards trigger when a permanent attacks — they fire together.
• Aurelia, the Law Above

  3RW

  Legendary Creature — AngelRW

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

  1W

  Enchantment — AuraW

  Both cards trigger when a permanent attacks — they fire together.
• Tome of Legends

  2

  Artifact — BookC

  Both cards trigger when a permanent attacks — they fire together.
• Delney, Streetwise Lookout

  2W

  Legendary Creature — Human ScoutW

  Delney, Streetwise Lookout makes Riddlekeeper's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Okoye, Mighty and Adored

  2GW

  Legendary Creature — Human Warrior HeroGW

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

  2G

  Creature — Human ArcherG

  Both cards trigger when a permanent attacks — they fire together.
• Sash and Waistcoat, Unmen

  1U

  Legendary Creature — Insect RogueU

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