Confidence:StrongSolidPlausibleTentativeSpeculative

• The Beast, Deathless Prince

  2BR

  Legendary Creature — DemonBR

  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.
• Merrow Bonegnawer

  B

  Creature — Merfolk RogueB

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Chandra, Fire of Kaladesh // Chandra, Roaring Flame

  1RR

  Legendary Creature — Human Shaman // Legendary Planeswalker — ChandraR

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Raggadragga, Goreguts Boss

  2RG

  Legendary Creature — Human BoarGR

  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.
• Rona, Herald of Invasion // Rona, Tolarian Obliterator

  1U

  Legendary Creature — Human Wizard // Legendary Creature — Phyrexian WizardBU

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

  G

  Creature — Elf WarriorG

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

  8CC

  Creature — EldraziC

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

  3W

  Creature — Kithkin SoldierW

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

  2R

  Creature — EldraziR

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

  4WW

  Creature — AngelW

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

  6R

  Creature — EldraziR

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

  2R

  Creature — Elemental ShamanR

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

  3W

  Creature — Cat WizardW

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

  3U

  Creature — Merfolk WizardU

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Lita, Mechanical Engineer

  2W

  Legendary Artifact Creature — ArtificerW

  Lita, Mechanical Engineer untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• Copperhorn Scout

  G

  Creature — Elf ScoutG

  Copperhorn Scout untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• White Plume Adventurer

  2W

  Creature — Orc ClericW

  White Plume Adventurer untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• Jace, Ingenious Mind-Mage

  4UU

  Legendary Planeswalker — JaceU

  Jace, Ingenious Mind-Mage untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• Murkfiend Liege

  2G/UG/UG/U

  Creature — HorrorGU

  Murkfiend Liege untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• The Thirteenth Doctor

  1GU

  Legendary Creature — Time Lord DoctorGU

  The Thirteenth Doctor untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• Veteran Beastrider

  1GW

  Creature — Human KnightGW

  Veteran Beastrider untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• Merrow Commerce

  1U

  Kindred Enchantment — MerfolkU

  Merrow Commerce untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• Ohabi Caleria

  1GW

  Legendary Creature — Elf ArcherGW

  Ohabi Caleria untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• Intruder Alarm

  2U

  EnchantmentU

  Intruder Alarm untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.
• Drumbellower

  2W

  Creature — SpiritW

  Drumbellower untaps all (or many) permanents, refreshing Kirol, Attentive First-Year's tap activation.