Confidence:StrongSolidPlausibleTentativeSpeculative

• Pili-Pala

  2

  Artifact Creature — ScarecrowC

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

  1W

  Creature — Kithkin SoldierW

  Token-fuel engine: one side keeps producing untapped tokens that pay the other's tap costs, and the output feeds the loop again — Squirrel Nest with Earthcraft is the classic shape.
• Vikya, Scorching Stalwart

  2W

  Legendary Creature — Human WarriorRW

  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 Skaab Wrangler's tap activation.
• Copperhorn Scout

  G

  Creature — Elf ScoutG

  Copperhorn Scout untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Crackleburr

  1U/RU/R

  Creature — ElementalRU

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

  2W

  Creature — Orc ClericW

  White Plume Adventurer untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Jace, Ingenious Mind-Mage

  4UU

  Legendary Planeswalker — JaceU

  Jace, Ingenious Mind-Mage untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Murkfiend Liege

  2G/UG/UG/U

  Creature — HorrorGU

  Murkfiend Liege untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Puresight Merrow

  W/UW/U

  Creature — Merfolk WizardUW

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

  2R

  EnchantmentR

  Aggravated Assault untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• The Thirteenth Doctor

  1GU

  Legendary Creature — Time Lord DoctorGU

  The Thirteenth Doctor untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Veteran Beastrider

  1GW

  Creature — Human KnightGW

  Veteran Beastrider untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Merrow Commerce

  1U

  Kindred Enchantment — MerfolkU

  Merrow Commerce untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Ohabi Caleria

  1GW

  Legendary Creature — Elf ArcherGW

  Ohabi Caleria untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Intruder Alarm

  2U

  EnchantmentU

  Intruder Alarm untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Drumbellower

  2W

  Creature — SpiritW

  Drumbellower untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Gideon, Martial Paragon

  4W

  Legendary Planeswalker — GideonW

  Gideon, Martial Paragon untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Knacksaw Clique

  3U

  Creature — Faerie RogueU

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

  WU

  Creature — Merfolk WizardUW

  Deepway Navigator untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Dazzling Theater // Prop Room

  3W2W

  Enchantment — Room // Enchantment — RoomW

  Dazzling Theater untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Myr Galvanizer

  3

  Artifact Creature — MyrC

  Myr Galvanizer untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Fury of the Horde

  5RR

  SorceryR

  Fury of the Horde untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• The Fifth Doctor

  2WU

  Legendary Creature — Time Lord DoctorUW

  The Fifth Doctor untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.
• Waves of Aggression

  3R/WR/W

  SorceryRW

  Waves of Aggression untaps all (or many) permanents, refreshing Skaab Wrangler's tap activation.