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).
• Springheart Nantuko

  1G

  Enchantment Creature — Insect MonkG

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

  B

  SorceryB

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

  W

  SorceryW

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

  B

  SorceryB

  Unearth puts Deadly Grub onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Grave Researcher // Reanimate

  2BB

  Creature — Troll Warlock // SorceryB

  Grave Researcher puts Deadly Grub onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Alaundo the Seer

  2GU

  Legendary Creature — Human ShamanGU

  Alaundo the Seer removes time counters from suspended cards, so Deadly Grub comes out of suspend sooner — and any "whenever a time counter is removed" payoff on it fires each time.
• 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).
• 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).
• Infestation Sage

  B

  Creature — Elf WarlockB

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

  G

  Creature — Fungus BeastG

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

  1BG

  Creature — InsectBG

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

  2G

  Enchantment — SagaG

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

  2G

  Creature — InsectG

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

  4GG

  SorceryG

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

  4UR

  Legendary Creature — GodRU

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

  GU

  Creature — SpiderGU

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