Confidence:StrongSolidPlausibleTentativeSpeculative

• Gideon, Ally of Zendikar

  2WW

  Legendary Planeswalker — GideonW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Kytheon, Hero of Akros // Gideon, Battle-Forged

  W

  Legendary Creature — Human Soldier // Legendary Planeswalker — GideonW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Gideon of the Trials

  1WW

  Legendary Planeswalker — GideonW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Gideon Jura

  3WW

  Legendary Planeswalker — GideonW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Gideon, Martial Paragon

  4W

  Legendary Planeswalker — GideonW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Dromoka's Command

  GW

  InstantGW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Najeela, the Blade-Blossom

  2R

  Legendary Creature — Human WarriorBGRUW

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Pain for All

  2R

  Enchantment — AuraR

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Fiendlash

  1R

  Artifact — EquipmentR

  Damage pair: both cards convert effects into damage. They stack in a damage-heavy deck; on their own they're a value engine, not a closed loop.
• Obsessive Pursuit

  1B

  EnchantmentB

  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 Gideon, the Oathsworn's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Arna Kennerüd, Skycaptain

  2WUB

  Legendary Creature — Human KnightBUW

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

  1RW

  EnchantmentRW

  Windcrag Siege makes Gideon, the Oathsworn's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Bonny Pall, Clearcutter

  3GUU

  Legendary Creature — Giant ScoutGU

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

  2WUB

  Legendary Creature — HorrorBUW

  Both cards trigger when a permanent attacks — they fire together.
• Invasion of Tarkir // Defiant Thundermaw

  1R

  Battle — Siege // Creature — DragonR

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

  2RW

  EnchantmentRW

  Both cards trigger when a permanent attacks — they fire together.
• Misty Mountains Raider

  4R

  Creature — Goblin SoldierR

  Both cards trigger when a permanent attacks — they fire together.
• Path of Bravery

  2W

  EnchantmentW

  Both cards trigger when a permanent attacks — they fire together.
• Guide of Souls

  W

  Creature — Human ClericW

  Both cards trigger when a permanent attacks — they fire together.
• Craig Boone, Novac Guard

  1RW

  Legendary Creature — Human SoldierRW

  Both cards trigger when a permanent attacks — they fire together.
• The Tenth Doctor

  3UR

  Legendary Creature — Time Lord DoctorRU

  Both cards trigger when a permanent attacks — they fire together.
• Mishra, Claimed by Gix

  2BR

  Legendary Creature — Phyrexian Human ArtificerBR

  Both cards trigger when a permanent attacks — they fire together.
• Mirror Room // Fractured Realm

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes Gideon, the Oathsworn's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Echoing Assault

  4R

  EnchantmentR

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