Confidence:StrongSolidPlausibleTentativeSpeculative

• Crackleburr

  1U/RU/R

  Creature — ElementalRU

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

  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.
• Najeela, the Blade-Blossom

  2R

  Legendary Creature — Human WarriorBGRUW

  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.
• Esper Sojourners

  WUB

  Artifact Creature — Vedalken WizardBUW

  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.
• Krovikan Plague

  2B

  Enchantment — AuraB

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

  3WU

  Creature — Human KnightUW

  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.
• Aura of Dominion

  UU

  Enchantment — AuraU

  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.
• Hand of Justice

  5W

  Creature — AvatarW

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

  8RR

  SorceryR

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

  2RRR

  SorceryR

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

  3

  ArtifactC

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

  5

  Artifact Creature — JuggernautC

  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.
• Susur Secundi, Void Altar

  Land — PlanetB

  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.
• Sothera, the Supervoid

  2BB

  Legendary EnchantmentB

  Both cards trigger when a creature dies — they fire together.
• Chandra, Torch of Defiance

  2RR

  Legendary Planeswalker — ChandraR

  Chandra, Torch of Defiance produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.
• Scavenger Regent // Exude Toxin

  3BXBB

  Creature — Dragon // Sorcery — OmenB

  Scavenger Regent produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.
• Chevill, Bane of Monsters

  BG

  Legendary Creature — Human RogueBG

  Both cards trigger when a creature dies — they fire together.
• Elesh Norn, Grand Cenobite

  5WW

  Legendary Creature — Phyrexian PraetorW

  Elesh Norn, Grand Cenobite produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.
• Nicol Bolas, the Ravager // Nicol Bolas, the Arisen

  1UBR

  Legendary Creature — Elder Dragon // Legendary Planeswalker — BolasBRU

  Nicol Bolas, the Ravager produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.
• Phlage, Titan of Fire's Fury

  1RW

  Legendary Creature — Elder GiantRW

  Phlage, Titan of Fire's Fury produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.
• Sarkhan's Unsealing

  3R

  EnchantmentR

  Sarkhan's Unsealing produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.
• Wrenn and Six

  RG

  Legendary Planeswalker — WrennGR

  Wrenn and Six produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.
• Chandra, Flameshaper

  5RR

  Legendary Planeswalker — ChandraR

  Chandra, Flameshaper produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.
• Chandra's Defeat

  R

  InstantR

  Chandra's Defeat produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.
• Ugin, the Spirit Dragon

  8

  Legendary Planeswalker — UginC

  Ugin, the Spirit Dragon produces damage that can kill creatures, enabling Goblin Sharpshooter's death-trigger or removal payoff.