Confidence:StrongSolidPlausibleTentativeSpeculative

• Wayta, Trainer Prodigy✓

  RGW

  Legendary Creature — Human WarriorGRW

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Freyalise Supplicant

  1G

  Creature — Human ClericG

  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.
• Scattershot Archer

  G

  Creature — Elf ArcherG

  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.
• Wolfhunter's Quiver

  1

  Artifact — EquipmentC

  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.
• Clockwork Hydra

  5

  Artifact Creature — HydraC

  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.
• Rin and Seri, Inseparable

  1RGW

  Legendary Creature — Dog CatGRW

  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.
• Bolrac-Clan Crusher

  3RG

  Creature — Ogre WarriorGR

  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.
• Endbringer

  5C

  Creature — EldraziC

  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.
• Arashi, the Sky Asunder

  3GG

  Legendary Creature — SpiritG

  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.
• Heavy Arbalest

  3

  Artifact — EquipmentC

  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.
• Viridian Longbow

  1

  Artifact — EquipmentC

  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.
• Razor Boomerang

  3

  Artifact — EquipmentC

  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.
• Hankyu

  1

  Artifact — EquipmentC

  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.
• Loot, the Pathfinder

  2GUR

  Legendary Creature — Beast NobleGRU

  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.
• Delney, Streetwise Lookout

  2W

  Legendary Creature — Human ScoutW

  Delney, Streetwise Lookout makes Cacophodon's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Roaming Throne

  4

  Artifact Creature — GolemC

  Roaming Throne makes Cacophodon's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Ulvenwald Tracker

  G

  Creature — Human ShamanG

  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.
• Mirror Room // Fractured Realm

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes Cacophodon's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Granger Guildmage

  G

  Creature — Human WizardGRW

  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.
• Wizard's Staff

  1U

  Artifact — EquipmentU

  Wizard's Staff makes Cacophodon's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• 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.
• Chamber Sentry

  X

  Artifact Creature — ConstructBGRUW

  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.
• Thornbite Staff

  2

  Kindred Artifact — Shaman EquipmentC

  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.
• 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 Cacophodon onto the battlefield from a graveyard without casting it, so its mana cost is never paid.