Confidence:StrongSolidPlausibleTentativeSpeculative

• Grist, Voracious Larva // Grist, the Plague Swarm

  G

  Legendary Creature — Insect // Legendary Planeswalker — GristBG

  Both cards produce the same kind of effect (shared token subtype).
• Fumulus, the Infestation

  3B

  Legendary Creature — Vampire InsectB

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

  3G

  Creature — Human ShamanG

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

  2BG

  Legendary Artifact Creature — ScarecrowBG

  Both cards produce the same kind of effect (shared token subtype).
• Vrestin, Menoptra Leader

  XGGW

  Legendary Creature — Alien Insect ScoutGW

  Both cards produce the same kind of effect (shared token subtype).
• Amzu, Swarm's Hunger

  3BG

  Legendary Creature — Insect ShamanBG

  Both cards produce the same kind of effect (shared token subtype).
• Aatchik, Emerald Radian

  3BBG

  Legendary Creature — Insect DruidBG

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

  2GG

  EnchantmentG

  Deliberate damage: one card deals damage to your own creatures on purpose — a fight, a targeted ping, or a standing effect that hits them every turn — and the other rewards being dealt damage: the enrage pattern.
• Springheart Nantuko

  1G

  Enchantment Creature — Insect MonkG

  Both cards produce the same kind of effect (shared token subtype).
• Sygg, Wanderwine Wisdom // Sygg, Wanderbrine Shield

  1U

  Legendary Creature — Merfolk Wizard // Legendary Creature — Merfolk RogueUW

  Both cards trigger on damage dealt — they fire together.
• Reanimate

  B

  SorceryB

  Reanimate puts Hornet Nest onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Helping Hand

  W

  SorceryW

  Helping Hand puts Hornet Nest onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Unearth

  B

  SorceryB

  Unearth puts Hornet Nest onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Fblthp, Impossibly Lost

  1U

  Legendary Creature — HomunculusU

  Both cards trigger on damage dealt — they fire together.
• Grave Researcher // Reanimate

  2BB

  Creature — Troll Warlock // SorceryB

  Grave Researcher puts Hornet Nest onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• The Beast, Deathless Prince

  2BR

  Legendary Creature — DemonBR

  Both cards trigger on damage dealt — they fire together.
• Vraska the Unseen

  3BG

  Legendary Planeswalker — VraskaBG

  Both cards trigger on damage dealt — they fire together.
• Cryoshatter

  U

  Enchantment — AuraU

  Both cards trigger on damage dealt — they fire together.
• Giant Adephage

  5GG

  Creature — InsectG

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

  5WW

  Enchantment Creature — Avatar HorrorW

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

  U

  Enchantment — AuraU

  Both cards trigger on damage dealt — they fire together.
• Eumidian Hatchery

  LandB

  Both cards produce the same kind of effect (shared token subtype).
• Grist, the Hunger Tide

  1BG

  Legendary Planeswalker — GristBG

  Both cards produce the same kind of effect (shared token subtype).
• Wayta, Trainer Prodigy

  RGW

  Legendary Creature — Human WarriorGRW

  Wayta, Trainer Prodigy makes Hornet Nest's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Infestation Sage

  B

  Creature — Elf WarlockB

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