Confidence:StrongSolidPlausibleTentativeSpeculative

• Hela, Mistress of Darkness // Dark Tutor

  4BB1BB

  Legendary Creature — God Sorcerer Villain // Sorcery — VengeanceB

  Both cards trigger on life loss — they fire together.
• Sahir, Visitor in Darkness

  1BB

  Legendary Creature — Human WizardB

  Both cards trigger on life loss — they fire together.
• The Master of Lake-town

  1BB

  Legendary Creature — Human AdvisorB

  Both cards trigger on life loss — they fire together.
• Ob Nixilis, Captive Kingpin

  2BR

  Legendary Creature — DemonBR

  Both cards trigger on life loss — they fire together.
• Valgavoth, Harrower of Souls

  2BR

  Legendary Creature — Elder DemonBR

  Both cards trigger on life loss — they fire together.
• Kefka, Court Mage // Kefka, Ruler of Ruin

  2UBR

  Legendary Creature — Human Wizard // Legendary Creature — Avatar WizardBRU

  Both cards trigger on life loss — they fire together.
• Emet-Selch of the Third Seat

  2UB

  Legendary Creature — Elder WizardBU

  Both cards trigger on life loss — they fire together.
• Mirror Room // Fractured Realm

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes Lurking Jackals's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Bloodthirsty Conqueror

  3BB

  Creature — Vampire KnightB

  Both cards trigger on life loss — they fire together.
• Mindcrank

  2

  ArtifactC

  Both cards trigger on life loss — they fire together.
• Exquisite Blood

  4B

  EnchantmentB

  Both cards trigger on life loss — they fire together.