Confidence:StrongSolidPlausibleTentativeSpeculative

• Intruder Alarm

  2U

  EnchantmentU

  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.
• Tribute to Horobi // Echo of Death's Wail

  1B

  Enchantment — Saga // Enchantment Creature — SpiritB

  Synergy between the two cards.
• 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

  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.
• Breath of Fury

  2RR

  Enchantment — AuraR

  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.
• Minsc & Boo, Timeless Heroes

  2RG

  Legendary Planeswalker — MinscGR

  Piper of the Swarm temporarily takes control of an opponent's creature, and Minsc & Boo, Timeless Heroes sacrifices it — the opponent loses the permanent for good.
• Fiend Artisan

  B/GB/G

  Creature — NightmareBG

  Piper of the Swarm temporarily takes control of an opponent's creature, and Fiend Artisan sacrifices it — the opponent loses the permanent for good.
• Prime Speaker Vannifar

  2GU

  Legendary Creature — Elf Ooze WizardGU

  Piper of the Swarm temporarily takes control of an opponent's creature, and Prime Speaker Vannifar sacrifices it — the opponent loses the permanent for good.
• Kethek, Crucible Goliath

  2BR

  Legendary Creature — Phyrexian BeastBR

  Piper of the Swarm temporarily takes control of an opponent's creature, and Kethek, Crucible Goliath sacrifices it — the opponent loses the permanent for good.
• Viscerid Drone

  1U

  Creature — Homarid DroneU

  Piper of the Swarm temporarily takes control of an opponent's creature, and Viscerid Drone sacrifices it — the opponent loses the permanent for good.
• Invasion of New Capenna // Holy Frazzle-Cannon

  WB

  Battle — Siege // Artifact — EquipmentBW

  Piper of the Swarm temporarily takes control of an opponent's creature, and Invasion of New Capenna sacrifices it — the opponent loses the permanent for good.
• My Precious // Allure of Power

  31B

  Legendary Artifact — Equipment // Instant — AdventureB

  Piper of the Swarm temporarily takes control of an opponent's creature, and My Precious sacrifices it — the opponent loses the permanent for good.
• Caesar, Legion's Emperor

  1RWB

  Legendary Creature — Human SoldierBRW

  Piper of the Swarm temporarily takes control of an opponent's creature, and Caesar, Legion's Emperor sacrifices it — the opponent loses the permanent for good.
• Grimgrin, Corpse-Born

  3UB

  Legendary Creature — Zombie WarriorBU

  Piper of the Swarm temporarily takes control of an opponent's creature, and Grimgrin, Corpse-Born sacrifices it — the opponent loses the permanent for good.
• Copperhorn Scout

  G

  Creature — Elf ScoutG

  Copperhorn Scout untaps all (or many) permanents, refreshing Piper of the Swarm's tap activation.
• Garruk Relentless // Garruk, the Veil-Cursed

  3G

  Legendary Planeswalker — Garruk // Legendary Planeswalker — GarrukBG

  Piper of the Swarm temporarily takes control of an opponent's creature, and Garruk Relentless sacrifices it — the opponent loses the permanent for good.
• Cabal Therapist

  B

  Creature — HorrorB

  Piper of the Swarm temporarily takes control of an opponent's creature, and Cabal Therapist sacrifices it — the opponent loses the permanent for good.
• Mask of the Mimic

  U

  InstantU

  Piper of the Swarm temporarily takes control of an opponent's creature, and Mask of the Mimic sacrifices it — the opponent loses the permanent for good.
• Zimone and Dina

  BGU

  Legendary Creature — Human DryadBGU

  Piper of the Swarm temporarily takes control of an opponent's creature, and Zimone and Dina sacrifices it — the opponent loses the permanent for good.
• White Plume Adventurer

  2W

  Creature — Orc ClericW

  White Plume Adventurer untaps all (or many) permanents, refreshing Piper of the Swarm's tap activation.
• Louisoix's Sacrifice

  U

  InstantU

  Piper of the Swarm temporarily takes control of an opponent's creature, and Louisoix's Sacrifice sacrifices it — the opponent loses the permanent for good.
• Hidetsugu, Devouring Chaos

  3B

  Legendary Creature — Ogre DemonBR

  Piper of the Swarm temporarily takes control of an opponent's creature, and Hidetsugu, Devouring Chaos sacrifices it — the opponent loses the permanent for good.
• Vivien on the Hunt

  4GG

  Legendary Planeswalker — VivienG

  Piper of the Swarm temporarily takes control of an opponent's creature, and Vivien on the Hunt sacrifices it — the opponent loses the permanent for good.
• Grist, the Hunger Tide

  1BG

  Legendary Planeswalker — GristBG

  Piper of the Swarm temporarily takes control of an opponent's creature, and Grist, the Hunger Tide sacrifices it — the opponent loses the permanent for good.
• Jace, Ingenious Mind-Mage

  4UU

  Legendary Planeswalker — JaceU

  Jace, Ingenious Mind-Mage untaps all (or many) permanents, refreshing Piper of the Swarm's tap activation.