Confidence:StrongSolidPlausibleTentativeSpeculative

• Gaea's Cradle✓

  Legendary LandG

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Growing Rites of Itlimoc // Itlimoc, Cradle of the Sun✓

  2G

  Legendary Enchantment // Legendary LandG

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Nykthos, Shrine to Nyx✓

  Legendary LandC

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

  Legendary LandW

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

  Legendary LandU

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

  2BG

  Legendary Creature — Squirrel DruidBG

  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.
• Wrenn and Realmbreaker

  1GG

  Legendary Planeswalker — WrennG

  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.
• Lithoform Blight

  1B

  Enchantment — AuraB

  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.
• Alpine Moon

  R

  EnchantmentR

  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.
• Ojer Taq, Deepest Foundation // Temple of Civilization

  4WW

  Legendary Creature — God // LandW

  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.
• Emeria's Call // Emeria, Shattered Skyclave

  4WWW

  Sorcery // LandW

  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.
• Maze's End

  LandC

  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.
• Great Divide Guide

  1G

  Creature — Human Scout AllyG

  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.
• Karakas

  Legendary LandW

  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.
• Abundant Growth

  G

  Enchantment — AuraG

  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.
• Restless Fortress

  LandBW

  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.
• Boseiju, Who Endures

  Legendary LandG

  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.
• Aclazotz, Deepest Betrayal // Temple of the Dead

  3BB

  Legendary Creature — Bat God // LandB

  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.
• Baylen, the Haymaker

  RGW

  Legendary Creature — Rabbit WarriorGRW

  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.
• Sidequest: Catch a Fish // Cooking Campsite

  2W

  Enchantment // LandW

  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.
• Joiner Adept

  1G

  Creature — Elf DruidG

  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.
• Liliana of the Dark Realms

  2BB

  Legendary Planeswalker — LilianaB

  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.
• Honor-Worn Shaku

  3

  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.
• Thousand Moons Smithy // Barracks of the Thousand

  2WW

  Legendary Artifact // Legendary Artifact LandW

  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.
• Hydroelectric Specimen // Hydroelectric Laboratory

  2U

  Creature — Weird // LandU

  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.