Confidence:StrongSolidPlausibleTentativeSpeculative

• Mikey & Leo, Chaos & Order

  G/WG/W

  Legendary Creature — Mutant Ninja TurtleGW

  Both cards trigger when a counter is placed — they fire together.
• Hollowmurk Siege

  BG

  EnchantmentBG

  Both cards trigger when a counter is placed — they fire together.
• Earth Kingdom General

  3G

  Creature — Human Soldier AllyG

  Both cards trigger when a counter is placed — they fire together.
• The Great Goblin

  1B/RB/R

  Legendary Creature — Goblin NobleBR

  Both cards trigger when a counter is placed — they fire together.
• Omarthis, Ghostfire Initiate

  XX

  Legendary Creature — Spirit SnakeC

  Both cards trigger when a counter is placed — they fire together.
• Terrasymbiosis

  2G

  EnchantmentG

  Both cards trigger when a counter is placed — they fire together.
• Botanical Brawler

  GW

  Creature — Elemental WarriorGW

  Both cards trigger when a counter is placed — they fire together.
• Kros, Defense Contractor

  1GWU

  Legendary Creature — Cat AdvisorGUW

  Both cards trigger when a counter is placed — they fire together.
• Casey Jones, Back Alley Brute

  3R

  Legendary Creature — Human BerserkerR

  Both cards trigger when a counter is placed — they fire together.
• Ant-Man, Colony Commander

  1GU

  Legendary Creature — Human Rogue HeroGU

  Both cards trigger when a counter is placed — they fire together.
• Shalai and Hallar

  1RGW

  Legendary Creature — Angel ElfGRW

  Both cards trigger when a counter is placed — they fire together.
• Moss-Pit Skeleton

  BG

  Creature — Plant SkeletonBG

  Both cards trigger when a counter is placed — they fire together.
• Simic Ascendancy

  GU

  EnchantmentGU

  Both cards trigger when a counter is placed — they fire together.
• Innkeeper's Talent

  1G

  Enchantment — ClassG

  Counter synergy: both cards work with the same kind of counters, so their effects stack in a counters deck. Not necessarily a closed loop on its own.
• Invisible Woman, Sue Storm

  4W

  Legendary Creature — Human HeroW

  Both cards trigger when a counter is placed — they fire together.
• Wildwood Scourge

  XG

  Creature — HydraG

  Both cards trigger when a counter is placed — they fire together.
• Stalwart Successor

  1BG

  Creature — Human WarriorBG

  Both cards trigger when a counter is placed — they fire together.
• Wizard Class

  U

  Enchantment — ClassU

  Draw pair: both cards engage with card draw. With a damage-or-draw trigger between them they form a draw engine.
• Animation Module

  1

  ArtifactC

  Both cards trigger when a counter is placed — they fire together.
• Cloaked Cadet

  4G

  Creature — Human RangerG

  Both cards trigger when a counter is placed — they fire together.
• Enduring Scalelord

  4GW

  Creature — DragonGW

  Both cards trigger when a counter is placed — they fire together.
• Cursed Wombat

  BG

  Creature — Nightmare WombatBG

  Both cards trigger when a counter is placed — they fire together.
• All Will Be One

  3RR

  EnchantmentR

  Both cards trigger when a counter is placed — they fire together.
• Dusk Legion Duelist

  1W

  Creature — Vampire SoldierW

  Both cards trigger when a counter is placed — they fire together.
• Hythonia the Cruel

  4BB

  Legendary Creature — GorgonB

  Both cards trigger when a counter is placed — they fire together.