Confidence:StrongSolidPlausibleTentativeSpeculative

• Master of the Wild Hunt

  2GG

  Creature — Human ShamanG

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Wolfhunter's Quiver

  1

  Artifact — EquipmentC

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Rin and Seri, Inseparable

  1RGW

  Legendary Creature — Dog CatGRW

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Wayta, Trainer Prodigy✓

  RGW

  Legendary Creature — Human WarriorGRW

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Bolrac-Clan Crusher

  3RG

  Creature — Ogre WarriorGR

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

  5C

  Creature — EldraziC

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

  3

  Artifact — EquipmentC

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

  G

  Creature — Elf ArcherG

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

  1

  Artifact — EquipmentC

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

  1

  Artifact — EquipmentC

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

  1

  Artifact — EquipmentC

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

  1G

  Creature — Human ClericG

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

  3

  Artifact — EquipmentC

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

  G

  Creature — Human ShamanG

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

  X

  Artifact Creature — ConstructBGRUW

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

  G

  Creature — Human WizardGRW

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

  2

  Kindred Artifact — Shaman EquipmentC

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• 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.
• Sygg, Wanderwine Wisdom // Sygg, Wanderbrine Shield

  1U

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

  Both cards trigger on damage dealt — they fire together.
• The Beast, Deathless Prince

  2BR

  Legendary Creature — DemonBR

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

  XWUU

  Legendary Planeswalker — NikoUW

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

  U

  Enchantment — AuraU

  Both cards trigger on damage dealt — they fire together.

• WithFreyalise Supplicant1GG

  Untap loop: each card untaps the other, generating arbitrary activations or mana. These two can't keep the loop going alone — add one of these to complete it:

  Baloth Prime3GElephant Guide2GArchitect of the Untamed2GAutomated Assembly Line1WAvacyn's Collar1Fishing Pole1
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