Confidence:StrongSolidPlausibleTentativeSpeculative

• Obsessive Pursuit

  1B

  EnchantmentB

  Both cards trigger when a permanent attacks — they fire together.
• Instrument of the Bards

  G

  Legendary ArtifactG

  Mana loop: net-positive mana cycle between the two cards.
• Mr. House, President and CEO

  RWB

  Legendary Artifact Creature — HumanBRW

  Mana loop: net-positive mana cycle between the two cards.
• Invasion of New Capenna // Holy Frazzle-Cannon

  WB

  Battle — Siege // Artifact — EquipmentBW

  Both cards trigger when a permanent attacks — they fire together.
• Tempered in Solitude

  1R

  EnchantmentR

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

  3W

  Creature — Bird ClericW

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

  1

  ArtifactC

  Mana loop: net-positive mana cycle between the two cards.
• Araña, Heart of the Spider

  1RW

  Legendary Creature — Spider Human HeroRW

  Both cards trigger when a permanent attacks — they fire together.
• Dyadrine, Synthesis Amalgam

  XGW

  Legendary Artifact Creature — ConstructGW

  Both cards trigger when a permanent attacks — they fire together.
• Twenty-Toed Toad

  3U

  Creature — Frog WizardU

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

  3R

  EnchantmentR

  Both cards trigger when a permanent attacks — they fire together.
• Stark Industries Executive

  R

  Creature — Human AdvisorR

  Mana loop: net-positive mana cycle between the two cards.
• Daredevil, Man Without Fear

  2RW

  Legendary Creature — Human HeroRW

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

  U

  Enchantment — AuraU

  Both cards trigger when a permanent attacks — they fire together.
• Neyali, Suns' Vanguard

  2RW

  Legendary Creature — Human RebelRW

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

  1WW

  Legendary Planeswalker — BasriW

  Both cards trigger when a permanent attacks — they fire together.
• Fain, the Broker

  2B

  Legendary Creature — Human WarlockB

  Mana loop: net-positive mana cycle between the two cards.
• Arna Kennerüd, Skycaptain

  2WUB

  Legendary Creature — Human KnightBUW

  Both cards trigger when a permanent attacks — they fire together.
• Ashnod, Flesh Mechanist

  B

  Legendary Creature — Human ArtificerB

  Mana loop: net-positive mana cycle between the two cards.
• Norin the Wary

  R

  Legendary Creature — Human WarriorR

  Both cards trigger when a permanent attacks — they fire together.
• Wizard's Rockets

  1

  ArtifactC

  Mana loop: net-positive mana cycle between the two cards.
• Gleaming Splendor

  1W

  EnchantmentW

  Mana loop: net-positive mana cycle between the two cards.
• Hollowmurk Siege

  BG

  EnchantmentBG

  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.
• The Earth King

  3G

  Legendary Creature — Human Noble AllyG

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