Confidence:StrongSolidPlausibleTentativeSpeculative

• Hermes, Overseer of Elpis

  3U

  Legendary Creature — Elder WizardU

  Both cards trigger when a permanent attacks — they fire together.
• Arna Kennerüd, Skycaptain

  2WUB

  Legendary Creature — Human KnightBUW

  Both cards trigger when a permanent attacks — they fire together.
• The Mind Stone

  1W

  Legendary Artifact — Infinity StoneW

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• SOLDIER Military Program

  2W

  EnchantmentW

  Both cards produce the same kind of effect (shared token subtype).
• Soaring Thought-Thief

  UB

  Creature — Human RogueBU

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

  2U

  Creature — Human SoldierU

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

  W

  Creature — Human ClericW

  Both cards trigger when a permanent attacks — they fire together.
• Champions from Beyond

  XWW

  EnchantmentW

  Both cards trigger when a permanent attacks — they fire together.
• Grolnok, the Omnivore

  2GU

  Legendary Creature — FrogGU

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

  3U

  Creature — Cat BeastU

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Captain of the Watch

  4WW

  Creature — Human SoldierW

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

  2W

  Creature — Human SoldierW

  Both cards produce the same kind of effect (shared token subtype).
• Brago, King Eternal

  2WU

  Legendary Creature — Spirit NobleUW

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Arboreal Alliance

  XGG

  EnchantmentG

  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.
• Shard of Broken Glass

  1

  Artifact — EquipmentC

  Both cards trigger when a permanent attacks — they fire together.
• Dromoka, the Eternal

  3GW

  Legendary Creature — DragonGW

  Both cards trigger when a permanent attacks — they fire together.
• Silumgar, the Drifting Death

  4UB

  Legendary Creature — DragonBU

  Both cards trigger when a permanent attacks — they fire together.
• Mirror-Sigil Sergeant

  5W

  Creature — Rhino SoldierW

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

  3WW

  Creature — Phyrexian AngelW

  Both cards trigger when a permanent attacks — they fire together.
• Nuka-Nuke Launcher

  2

  Artifact — EquipmentC

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

  4R

  EnchantmentR

  Both cards trigger when a permanent attacks — they fire together.
• Knight-Captain of Eos

  4W

  Creature — Human KnightW

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

  1U

  Enchantment — AuraU

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

  2U

  Enchantment — AuraU

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