Confidence:StrongSolidPlausibleTentativeSpeculative

• Reanimate

  B

  SorceryB

  Reanimate puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Helping Hand

  W

  SorceryW

  Helping Hand puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Unearth

  B

  SorceryB

  Unearth puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Grave Researcher // Reanimate

  2BB

  Creature — Troll Warlock // SorceryB

  Grave Researcher puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Nutrient Block

  1

  Artifact — FoodC

  Hollow Scavenger is a sacrifice outlet, enabling Nutrient Block's death or sacrifice trigger.
• Can't Stay Away

  WB

  SorceryBW

  Can't Stay Away puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Priest of Fell Rites

  WB

  Creature — Human WarlockBW

  Priest of Fell Rites puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Resistance Is Futile

  1B

  SorceryB

  Resistance Is Futile puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Ultron the Annihilator

  3BB

  Legendary Artifact Creature — Robot VillainB

  Hollow Scavenger is a sacrifice outlet, enabling Ultron the Annihilator's death or sacrifice trigger.
• Animate Dead

  1B

  Enchantment — AuraB

  Animate Dead puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Exhume

  1B

  SorceryB

  Exhume puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Marionette Apprentice

  1B

  Creature — Human ArtificerB

  Hollow Scavenger is a sacrifice outlet, enabling Marionette Apprentice's death or sacrifice trigger.
• Return Triumphant

  1W

  SorceryW

  Return Triumphant puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Biotech Specialist

  RG

  Creature — Insect ScientistGR

  Hollow Scavenger is a sacrifice outlet, enabling Biotech Specialist's death or sacrifice trigger.
• Life // Death

  G1B

  Sorcery // SorceryBG

  Life puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Elrond, Moon-Reader

  2U

  Legendary Creature — Elf NobleU

  Hollow Scavenger has activated abilities that aren't mana abilities, fueling Elrond, Moon-Reader's activation-trigger.
• Dance of the Dead

  1B

  Enchantment — AuraB

  Dance of the Dead puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Recommission

  1W

  SorceryW

  Recommission puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Call a Surprise Witness

  1W

  SorceryW

  Call a Surprise Witness puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Persist

  1B

  SorceryB

  Persist puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Soul Exchange

  BB

  SorceryB

  Soul Exchange puts Hollow Scavenger onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Exuberant Fuseling

  R

  Creature — Phyrexian Goblin WarriorR

  Hollow Scavenger is a sacrifice outlet, enabling Exuberant Fuseling's death or sacrifice trigger.
• Shard of the Void Dragon

  4BBB

  Creature — C'tanB

  Hollow Scavenger is a sacrifice outlet, enabling Shard of the Void Dragon's death or sacrifice trigger.
• Ravenous Squirrel

  B/G

  Creature — SquirrelBG

  Hollow Scavenger is a sacrifice outlet, enabling Ravenous Squirrel's death or sacrifice trigger.
• Heaped Harvest

  2G

  Artifact — FoodG

  Hollow Scavenger is a sacrifice outlet, enabling Heaped Harvest's death or sacrifice trigger.