Confidence:StrongSolidPlausibleTentativeSpeculative

• Waylay

  2W

  InstantW

  Both cards produce the same kind of effect (shared token subtype).
• 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.
• Dion, Bahamut's Dominant // Bahamut, Warden of Light

  3W

  Legendary Creature — Human Noble Knight // Legendary Enchantment Creature — Saga DragonW

  Both cards produce the same kind of effect (shared token subtype).
• Aryel, Knight of Windgrace

  2WB

  Legendary Creature — Human KnightBW

  Both cards produce the same kind of effect (shared token subtype).
• 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.
• 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.
• Brought Back

  WW

  InstantW

  Brought Back returns creatures from the graveyard to the battlefield, re-firing Court of Embereth's enter-the-battlefield effect.
• Gideon's Phalanx

  5WW

  InstantW

  Both cards produce the same kind of effect (shared token subtype).
• Summon: Knights of Round

  6WW

  Enchantment Creature — Saga KnightW

  Both cards produce the same kind of effect (shared token subtype).
• Doom Foretold

  2WB

  EnchantmentBW

  Both cards produce the same kind of effect (shared token subtype).
• Yuna, Hope of Spira

  3GW

  Legendary Creature — Human ClericGW

  Yuna, Hope of Spira returns creatures from the graveyard to the battlefield, re-firing Court of Embereth's enter-the-battlefield effect.
• Tameshi, Reality Architect

  2U

  Legendary Creature — Moonfolk WizardUW

  Tameshi, Reality Architect returns creatures from the graveyard to the battlefield, re-firing Court of Embereth's enter-the-battlefield effect.
• Phelia, Exuberant Shepherd

  1W

  Legendary Creature — DogW

  Phelia, Exuberant Shepherd blinks (exiles and returns) a permanent, re-firing Court of Embereth's enter-the-battlefield effect.
• The Circle of Loyalty

  4WW

  Legendary ArtifactW

  Both cards produce the same kind of effect (shared token subtype).
• Gideon, Ally of Zendikar

  2WW

  Legendary Planeswalker — GideonW

  Both cards produce the same kind of effect (shared token subtype).
• Oath of Eorl

  3RW

  Enchantment — SagaRW

  Both cards produce the same kind of effect (shared token subtype).
• Elrond, Moon-Reader

  2U

  Legendary Creature — Elf NobleU

  Elrond, Moon-Reader blinks (exiles and returns) a permanent, re-firing Court of Embereth's enter-the-battlefield effect.
• Éowyn, Shieldmaiden

  2URW

  Legendary Creature — Human KnightRUW

  Both cards produce the same kind of effect (shared token subtype).
• Riftmarked Knight

  1WW

  Creature — Human Rebel KnightW

  Both cards produce the same kind of effect (shared token subtype).
• What Must Be Done

  3WW

  SorceryW

  What Must Be Done returns creatures from the graveyard to the battlefield, re-firing Court of Embereth's enter-the-battlefield effect.
• Conclave Cavalier

  GGWW

  Creature — Centaur KnightGW

  Both cards produce the same kind of effect (shared token subtype).
• Virtue of Loyalty // Ardenvale Fealty

  3WW1W

  Enchantment // Instant — AdventureW

  Both cards produce the same kind of effect (shared token subtype).
• Sorin, Grim Nemesis

  4WB

  Legendary Planeswalker — SorinBW

  Both cards produce the same kind of effect (shared token subtype).
• Assure // Assemble

  G/WG/W4GW

  Instant // InstantGW

  Both cards produce the same kind of effect (shared token subtype).
• Imodane's Recruiter // Train Troops

  2R4W

  Creature — Human Knight // Sorcery — AdventureRW

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