Confidence:StrongSolidPlausibleTentativeSpeculative

• Samut, Voice of Dissent✓

  3RG

  Legendary Creature — Human WarriorGRW

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

  2U

  Enchantment — AuraU

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

  1UU

  Enchantment — AuraU

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Thousand-Year Elixir✓

  3

  ArtifactC

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

  4

  Artifact — EquipmentC

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

  3

  ArtifactC

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

  3

  Artifact — EquipmentC

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

  1WU

  EnchantmentUW

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

  U

  Enchantment — AuraU

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

  2W

  Enchantment — AuraW

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

  1G

  EnchantmentG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Spreading Plague

  4B

  EnchantmentB

  Both cards trigger when a creature enters the battlefield — they fire together.
• Tinybones Joins Up

  B

  Legendary EnchantmentB

  Both cards trigger when a creature enters the battlefield — they fire together.
• Faramir, Steward of Gondor

  1WU

  Legendary Creature — Human NobleUW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Eye of Singularity

  3W

  World EnchantmentW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Garruk, Curse Breaker

  3GG

  Legendary Planeswalker — GarrukG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Kadena, Slinking Sorcerer

  1BGU

  Legendary Creature — Snake Wizard SorcererBGU

  Both cards trigger when a creature enters the battlefield — they fire together.
• Grist, Voracious Larva // Grist, the Plague Swarm

  G

  Legendary Creature — Insect // Legendary Planeswalker — GristBG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Copperhorn Scout

  G

  Creature — Elf ScoutG

  Copperhorn Scout untaps all (or many) permanents, refreshing Selvala, Heart of the Wilds's tap activation.
• Warden of the Grove

  2G

  Creature — HydraG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Momo, Friendly Flier

  W

  Legendary Creature — Lemur Bat AllyW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Fire Lord Zuko

  RWB

  Legendary Creature — Human Noble AllyBRW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Lagrella, the Magpie

  GWU

  Legendary Creature — Human SoldierGUW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Prowl, Stoic Strategist // Prowl, Pursuit Vehicle

  3W

  Legendary Artifact Creature — Robot // Legendary Artifact — VehicleW

  Both cards trigger when a creature enters the battlefield — they fire together.
• The Sibsig Ceremony

  BBB

  Legendary EnchantmentB

  Both cards trigger when a creature enters the battlefield — they fire together.