Confidence:StrongSolidPlausibleTentativeSpeculative

• 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.
• Blightcaster

  3B

  Creature — Human WizardB

  Both cards trigger when you cast a spell — they fire together.
• 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.
• Thorntooth Witch

  5B

  Creature — Treefolk ShamanB

  Both cards trigger when you cast a spell — they fire together.
• Black Lotus

  0

  ArtifactC

  Black Lotus is a free spell, so Treacherous Blessing's cast trigger fires for nothing.
• Mana Crypt

  0

  ArtifactC

  Mana Crypt is a free spell, so Treacherous Blessing's cast trigger fires for nothing.
• Mox Emerald

  0

  ArtifactG

  Mox Emerald is a free spell, so Treacherous Blessing's cast trigger fires for nothing.
• Mox Jet

  0

  ArtifactB

  Mox Jet is a free spell, so Treacherous Blessing's cast trigger fires for nothing.
• Mox Pearl

  0

  ArtifactW

  Mox Pearl is a free spell, so Treacherous Blessing's cast trigger fires for nothing.
• Mox Ruby

  0

  ArtifactR

  Mox Ruby is a free spell, so Treacherous Blessing's cast trigger fires for nothing.
• Mox Sapphire

  0

  ArtifactU

  Mox Sapphire is a free spell, so Treacherous Blessing's cast trigger fires for nothing.
• Riku of Many Paths

  GUR

  Legendary Creature — Human WizardGRU

  Both cards trigger when you cast a spell — they fire together.
• Baron Helmut Zemo

  BBB

  Legendary Creature — Human Noble VillainB

  Both cards trigger when you cast a spell — they fire together.
• Song of Creation

  1GUR

  EnchantmentGRU

  Both cards trigger when you cast a spell — they fire together.
• Runaway Steam-Kin

  1R

  Creature — ElementalR

  Both cards trigger when you cast a spell — they fire together.
• Brought Back

  WW

  InstantW

  Brought Back returns creatures from the graveyard to the battlefield, re-firing Treacherous Blessing's enter-the-battlefield effect.
• Jenson Carthalion, Druid Exile

  GW

  Legendary Creature — Human DruidBGRUW

  Both cards trigger when you cast a spell — they fire together.
• Mercurial Spelldancer

  1U

  Creature — Phyrexian RogueU

  Both cards trigger when you cast a spell — they fire together.
• God-Eternal Oketra

  3WW

  Legendary Creature — Zombie GodW

  Both cards trigger when you cast a spell — they fire together.
• Ambling Stormshell

  3UU

  Creature — TurtleU

  Both cards trigger when you cast a spell — they fire together.
• Geometer's Arthropod

  GU

  Creature — Fractal CrabGU

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

  3R

  EnchantmentR

  Both cards trigger when you cast a spell — they fire together.
• Shanid, Sleepers' Scourge

  1RWB

  Legendary Creature — Human KnightBRW

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

  2BR

  Legendary Creature — Tiefling WarlockBR

  Both cards trigger when you cast a spell — they fire together.
• Brigone, Soldier of Meletis

  1W

  Legendary Creature — Human SoldierW

  Both cards trigger when you cast a spell — they fire together.