Confidence:StrongSolidPlausibleTentativeSpeculative

• Clock of Omens

  4

  ArtifactC

  One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.
• 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).
• Scouring Swarm

  1BG

  Creature — InsectBG

  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).
• Intellectual Offering

  4U

  InstantU

  Intellectual Offering untaps all (or many) permanents, refreshing Hornet Cannon's tap activation.
• The Swarmweaver

  2BG

  Legendary Artifact Creature — ScarecrowBG

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

  2U

  EnchantmentU

  Unstoppable Plan untaps all (or many) permanents, refreshing Hornet Cannon's tap activation.
• Amzu, Swarm's Hunger

  3BG

  Legendary Creature — Insect ShamanBG

  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).
• Seedborn Muse

  3GG

  Creature — SpiritG

  Seedborn Muse untaps all (or many) permanents, refreshing Hornet Cannon's tap activation.
• Unwinding Clock

  4

  ArtifactC

  Unwinding Clock untaps all (or many) permanents, refreshing Hornet Cannon's tap activation.
• Canoptek Scarab Swarm

  4

  Artifact Creature — InsectC

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

  5

  Legendary ArtifactC

  Paradox Engine untaps all (or many) permanents, refreshing Hornet Cannon's tap activation.
• Aatchik, Emerald Radian

  3BBG

  Legendary Creature — Insect DruidBG

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

  1U

  InstantU

  Dramatic Reversal untaps all (or many) permanents, refreshing Hornet Cannon's tap activation.
• Blinkmoth Infusion

  12UU

  InstantU

  Blinkmoth Infusion untaps all (or many) permanents, refreshing Hornet Cannon's tap activation.
• Springheart Nantuko

  1G

  Enchantment Creature — Insect MonkG

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

  5GG

  Creature — InsectG

  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).
• Overlord of the Mistmoors

  5WW

  Enchantment Creature — Avatar HorrorW

  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).
• 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).