Confidence:StrongSolidPlausibleTentativeSpeculative

• 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

  Callous Oppressor temporarily takes control of an opponent's creature, and Minsc & Boo, Timeless Heroes sacrifices it — the opponent loses the permanent for good.
• Mask of the Mimic

  U

  InstantU

  Callous Oppressor temporarily takes control of an opponent's creature, and Mask of the Mimic sacrifices it — the opponent loses the permanent for good.
• My Precious // Allure of Power

  31B

  Legendary Artifact — Equipment // Instant — AdventureB

  Callous Oppressor temporarily takes control of an opponent's creature, and My Precious sacrifices it — the opponent loses the permanent for good.
• Kethek, Crucible Goliath

  2BR

  Legendary Creature — Phyrexian BeastBR

  Callous Oppressor temporarily takes control of an opponent's creature, and Kethek, Crucible Goliath sacrifices it — the opponent loses the permanent for good.
• Copperhorn Scout

  G

  Creature — Elf ScoutG

  Copperhorn Scout untaps all (or many) permanents, refreshing Callous Oppressor's tap activation.
• Grimgrin, Corpse-Born

  3UB

  Legendary Creature — Zombie WarriorBU

  Callous Oppressor temporarily takes control of an opponent's creature, and Grimgrin, Corpse-Born sacrifices it — the opponent loses the permanent for good.
• Ultimate Nullification

  4W

  SorceryW

  Callous Oppressor temporarily takes control of an opponent's creature, and Ultimate Nullification sacrifices it — the opponent loses the permanent for good.
• Fiend Artisan

  B/GB/G

  Creature — NightmareBG

  Callous Oppressor temporarily takes control of an opponent's creature, and Fiend Artisan sacrifices it — the opponent loses the permanent for good.
• Ob Nixilis of the Black Oath

  3BB

  Legendary Planeswalker — NixilisB

  Callous Oppressor temporarily takes control of an opponent's creature, and Ob Nixilis of the Black Oath sacrifices it — the opponent loses the permanent for good.
• Louisoix's Sacrifice

  U

  InstantU

  Callous Oppressor temporarily takes control of an opponent's creature, and Louisoix's Sacrifice sacrifices it — the opponent loses the permanent for good.
• Zimone and Dina

  BGU

  Legendary Creature — Human DryadBGU

  Callous Oppressor temporarily takes control of an opponent's creature, and Zimone and Dina sacrifices it — the opponent loses the permanent for good.
• Vivien on the Hunt

  4GG

  Legendary Planeswalker — VivienG

  Callous Oppressor temporarily takes control of an opponent's creature, and Vivien on the Hunt sacrifices it — the opponent loses the permanent for good.
• Garruk Relentless // Garruk, the Veil-Cursed

  3G

  Legendary Planeswalker — Garruk // Legendary Planeswalker — GarrukBG

  Callous Oppressor temporarily takes control of an opponent's creature, and Garruk Relentless 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 Callous Oppressor's tap activation.
• Neoform

  GU

  SorceryGU

  Callous Oppressor temporarily takes control of an opponent's creature, and Neoform sacrifices it — the opponent loses the permanent for good.
• Wight of the Reliquary

  BG

  Creature — Zombie KnightBG

  Callous Oppressor temporarily takes control of an opponent's creature, and Wight of the Reliquary sacrifices it — the opponent loses the permanent for good.
• Ashnod, Flesh Mechanist

  B

  Legendary Creature — Human ArtificerB

  Callous Oppressor temporarily takes control of an opponent's creature, and Ashnod, Flesh Mechanist sacrifices it — the opponent loses the permanent for good.
• Tribute to Horobi // Echo of Death's Wail

  1B

  Enchantment — Saga // Enchantment Creature — SpiritB

  Callous Oppressor temporarily takes control of an opponent's creature, and Tribute to Horobi sacrifices it — the opponent loses the permanent for good.
• Hidetsugu, Devouring Chaos

  3B

  Legendary Creature — Ogre DemonBR

  Callous Oppressor temporarily takes control of an opponent's creature, and Hidetsugu, Devouring Chaos sacrifices it — the opponent loses the permanent for good.
• Razaketh, the Foulblooded

  5BBB

  Legendary Creature — DemonB

  Callous Oppressor temporarily takes control of an opponent's creature, and Razaketh, the Foulblooded sacrifices it — the opponent loses the permanent for good.
• Stronghold Assassin

  1BB

  Creature — Phyrexian Zombie AssassinB

  Callous Oppressor temporarily takes control of an opponent's creature, and Stronghold Assassin sacrifices it — the opponent loses the permanent for good.
• Caesar, Legion's Emperor

  1RWB

  Legendary Creature — Human SoldierBRW

  Callous Oppressor temporarily takes control of an opponent's creature, and Caesar, Legion's Emperor sacrifices it — the opponent loses the permanent for good.
• Jerren, Corrupted Bishop // Ormendahl, the Corrupter

  2B

  Legendary Creature — Human Cleric // Legendary Creature — DemonB

  Callous Oppressor temporarily takes control of an opponent's creature, and Jerren, Corrupted Bishop sacrifices it — the opponent loses the permanent for good.
• Eaten Alive

  B

  SorceryB

  Callous Oppressor temporarily takes control of an opponent's creature, and Eaten Alive sacrifices it — the opponent loses the permanent for good.