Confidence:StrongSolidPlausibleTentativeSpeculative

• Baloth Prime

  3G

  Creature — BeastG

  Fault Riders is a sacrifice outlet, enabling Baloth Prime's death or sacrifice trigger.
• Reanimate

  B

  SorceryB

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

  W

  SorceryW

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

  B

  SorceryB

  Unearth puts Fault Riders 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 Fault Riders onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Can't Stay Away

  WB

  SorceryBW

  Can't Stay Away puts Fault Riders 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 Fault Riders onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Sand Scout

  1W

  Creature — Human ScoutW

  Fault Riders is a sacrifice outlet, enabling Sand Scout's death or sacrifice trigger.
• Eumidian Hatchery

  LandB

  Fault Riders is a sacrifice outlet, enabling Eumidian Hatchery's death or sacrifice trigger.
• Resistance Is Futile

  1B

  SorceryB

  Resistance Is Futile puts Fault Riders onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Wind Zendikon

  U

  Enchantment — AuraU

  Fault Riders is a sacrifice outlet, enabling Wind Zendikon's death or sacrifice trigger.
• Titania, Voice of Gaea

  1GG

  Legendary Creature — ElementalG

  Fault Riders is a sacrifice outlet, enabling Titania, Voice of Gaea's death or sacrifice trigger.
• Animate Dead

  1B

  Enchantment — AuraB

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

  1B

  SorceryB

  Exhume puts Fault Riders onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Return Triumphant

  1W

  SorceryW

  Return Triumphant puts Fault Riders onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Life // Death

  G1B

  Sorcery // SorceryBG

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

  2U

  Legendary Creature — Elf NobleU

  Fault Riders 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 Fault Riders onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Recommission

  1W

  SorceryW

  Recommission puts Fault Riders 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 Fault Riders onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Persist

  1B

  SorceryB

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

  BB

  SorceryB

  Soul Exchange puts Fault Riders onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Skittering Precursor

  2R

  Creature — Eldrazi DroneR

  Fault Riders is a sacrifice outlet, enabling Skittering Precursor's death or sacrifice trigger.
• Slogurk, the Overslime

  1GU

  Legendary Creature — OozeGU

  Fault Riders is a sacrifice outlet, enabling Slogurk, the Overslime's death or sacrifice trigger.
• Corrupted Zendikon

  1B

  Enchantment — AuraB

  Fault Riders is a sacrifice outlet, enabling Corrupted Zendikon's death or sacrifice trigger.