Confidence:StrongSolidPlausibleTentativeSpeculative

• Bloodline Recollector // Ancestral Craving

  1BB

  Creature — Vampire Warlock // InstantB

  Reiver Demon wipes or mass-sacrifices creatures, and Bloodline Recollector profits when creatures die — or comes back from the wipe itself.
• Chevill, Bane of Monsters

  BG

  Legendary Creature — Human RogueBG

  Reiver Demon wipes or mass-sacrifices creatures, and Chevill, Bane of Monsters profits when creatures die — or comes back from the wipe itself.
• Season of Growth

  1G

  EnchantmentG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Spreading Plague

  4B

  EnchantmentB

  Both cards trigger when a creature enters the battlefield — they fire together.
• Private Research

  U

  Enchantment — AuraU

  Reiver Demon wipes or mass-sacrifices creatures, and Private Research profits when creatures die — or comes back from the wipe itself.
• Shaile, Dean of Radiance // Embrose, Dean of Shadow

  1W2BB

  Legendary Creature — Bird Cleric // Legendary Creature — Human WarlockBW

  Reiver Demon wipes or mass-sacrifices creatures, and Shaile, Dean of Radiance profits when creatures die — or comes back from the wipe itself.
• Tinybones Joins Up

  B

  Legendary EnchantmentB

  Both cards trigger when a creature enters the battlefield — they fire together.
• The Serpent Society

  1BG

  Legendary Creature — Human Snake VillainBG

  Reiver Demon wipes or mass-sacrifices creatures, and The Serpent Society profits when creatures die — or comes back from the wipe itself.
• Quest for the Gravelord

  B

  EnchantmentB

  Reiver Demon wipes or mass-sacrifices creatures, and Quest for the Gravelord profits when creatures die — or comes back from the wipe itself.
• Faramir, Steward of Gondor

  1WU

  Legendary Creature — Human NobleUW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Asmodeus the Archfiend

  4BB

  Legendary Creature — Devil GodB

  Asmodeus the Archfiend bounces a permanent, enabling Reiver Demon's recast / spell-cast trigger.
• Bequeathal

  G

  Enchantment — AuraG

  Reiver Demon wipes or mass-sacrifices creatures, and Bequeathal profits when creatures die — or comes back from the wipe itself.
• Endless Evil

  2U

  Enchantment — AuraU

  Reiver Demon wipes or mass-sacrifices creatures, and Endless Evil profits when creatures die — or comes back from the wipe itself.
• Syr Vondam, Sunstar Exemplar

  WB

  Legendary Creature — Human KnightBW

  Reiver Demon wipes or mass-sacrifices creatures, and Syr Vondam, Sunstar Exemplar profits when creatures die — or comes back from the wipe itself.
• Eye of Singularity

  3W

  World EnchantmentW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Reanimate

  B

  SorceryB

  Reanimate puts Reiver Demon onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Garruk, Curse Breaker

  3GG

  Legendary Planeswalker — GarrukG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Kadena, Slinking Sorcerer

  1BGU

  Legendary Creature — Snake Wizard SorcererBGU

  Both cards trigger when a creature enters the battlefield — they fire together.
• Rampart Architect

  3G

  Creature — Elephant AdvisorG

  Reiver Demon wipes or mass-sacrifices creatures, and Rampart Architect profits when creatures die — or comes back from the wipe itself.
• Grist, Voracious Larva // Grist, the Plague Swarm

  G

  Legendary Creature — Insect // Legendary Planeswalker — GristBG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Kraven the Hunter

  1BG

  Legendary Creature — Human Warrior VillainBG

  Reiver Demon wipes or mass-sacrifices creatures, and Kraven the Hunter profits when creatures die — or comes back from the wipe itself.
• Ashiok, Nightmare Muse

  3UB

  Legendary Planeswalker — AshiokBU

  Ashiok, Nightmare Muse bounces a permanent, enabling Reiver Demon's recast / spell-cast trigger.
• Warden of the Grove

  2G

  Creature — HydraG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Time Wipe

  2WWU

  SorceryUW

  Time Wipe bounces a permanent, enabling Reiver Demon's recast / spell-cast trigger.
• Mistbreath Elder

  G

  Creature — Frog WarriorG

  Mistbreath Elder bounces a permanent, enabling Reiver Demon's recast / spell-cast trigger.