Confidence:StrongSolidPlausibleTentativeSpeculative

• Dreamtide Whale

  2U

  Creature — WhaleU

  Both cards trigger when a spell is cast — they fire together.
• Scytheclaw Raptor

  2R

  Creature — DinosaurR

  Both cards trigger when a spell is cast — they fire together.
• Tethmos High Priest

  2W

  Creature — Cat ClericW

  Both cards trigger when a spell is cast — they fire together.
• Sarkhan's Unsealing

  3R

  EnchantmentR

  Both cards trigger when a spell is cast — they fire together.
• Ugin, Eye of the Storms

  7

  Legendary Planeswalker — UginC

  Both cards trigger when a spell is cast — they fire together.
• Pia Nalaar, Consul of Revival

  RW

  Legendary Creature — Human ArtificerRW

  Both cards trigger when a spell is cast — they fire together.
• Codie, Ravenous Codex

  3

  Legendary Artifact Creature — Book ConstructBGRUW

  Both cards trigger when a spell is cast — they fire together.
• Kozilek, Butcher of Truth

  10

  Legendary Creature — EldraziC

  Both cards trigger when a spell is cast — they fire together.
• Reanimate

  B

  SorceryB

  Reanimate puts Mirrorwing Dragon onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Rory Williams

  WU

  Legendary Creature — Human SoldierUW

  Both cards trigger when a spell is cast — they fire together.
• Erayo, Soratami Ascendant // Erayo's Essence

  1U

  Legendary Creature — Moonfolk Monk // Legendary EnchantmentU

  Both cards trigger when a spell is cast — they fire together.
• Prosper, Tome-Bound

  2BR

  Legendary Creature — Tiefling WarlockBR

  Both cards trigger when a spell is cast — they fire together.
• Grave Researcher // Reanimate

  2BB

  Creature — Troll Warlock // SorceryB

  Grave Researcher puts Mirrorwing Dragon onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Veyran, Voice of Duality

  1UR

  Legendary Creature — Efreet WizardRU

  Veyran, Voice of Duality makes Mirrorwing Dragon's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Malicious Affliction

  BB

  InstantB

  Both cards trigger when a spell is cast — they fire together.
• Blink

  2UB

  Enchantment — SagaBU

  Both cards trigger when a spell is cast — they fire together.
• Deathbringer Liege

  2W/BW/BW/B

  Creature — HorrorBW

  Both cards trigger when a spell is cast — they fire together.
• Oketra's Monument

  3

  Legendary ArtifactC

  Both cards trigger when a spell is cast — they fire together.
• The Beast, Deathless Prince

  2BR

  Legendary Creature — DemonBR

  Both cards trigger when a spell is cast — they fire together.
• Reki, the History of Kamigawa

  2G

  Legendary Creature — Human ShamanG

  Both cards trigger when a spell is cast — they fire together.
• Sefris of the Hidden Ways

  WUB

  Legendary Creature — Human WizardBUW

  Sefris of the Hidden Ways puts Mirrorwing Dragon onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Ruric Thar, the Unbowed

  4RG

  Legendary Creature — Ogre WarriorGR

  Both cards trigger when a spell is cast — they fire together.
• Moderation

  1WU

  EnchantmentUW

  Both cards trigger when a spell is cast — they fire together.
• Recurring Nightmare

  2B

  EnchantmentB

  Recurring Nightmare puts Mirrorwing Dragon onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Priest of Fell Rites

  WB

  Creature — Human WarlockBW

  Priest of Fell Rites puts Mirrorwing Dragon onto the battlefield from a graveyard without casting it, so its mana cost is never paid.