Confidence:StrongSolidPlausibleTentativeSpeculative

• Baru, Wurmspeaker

  2GG

  Legendary Creature — Human DruidG

  Both cards produce the same kind of effect (shared token subtype).
• Garruk, Primal Hunter

  2GGG

  Legendary Planeswalker — GarrukG

  Both cards produce the same kind of effect (shared token subtype).
• Sandwurm Convergence

  6GG

  EnchantmentG

  Both cards produce the same kind of effect (shared token subtype).
• Reanimate

  B

  SorceryB

  Reanimate puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Crush of Wurms

  6GGG

  SorceryG

  Both cards produce the same kind of effect (shared token subtype).
• Grave Researcher // Reanimate

  2BB

  Creature — Troll Warlock // SorceryB

  Grave Researcher puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Liliana, Death's Majesty

  3BB

  Legendary Planeswalker — LilianaB

  Liliana, Death's Majesty puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Yore-Tiller Nephilim

  WUBR

  Creature — NephilimBRUW

  Yore-Tiller Nephilim puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Sefris of the Hidden Ways

  WUB

  Legendary Creature — Human WizardBUW

  Sefris of the Hidden Ways puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Recurring Nightmare

  2B

  EnchantmentB

  Recurring Nightmare puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Unfinished Business

  3WW

  SorceryW

  Unfinished Business puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Forum Necroscribe

  5B

  Creature — Troll WarlockB

  Forum Necroscribe puts Penumbra Wurm 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 Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Kroxa and Kunoros

  3RWB

  Legendary Creature — Elder Giant DogBRW

  Kroxa and Kunoros puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• The Cruelty of Gix

  3BB

  Enchantment — SagaB

  The Cruelty of Gix puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Worldspine Wurm

  8GGG

  Creature — WurmG

  Both cards produce the same kind of effect (shared token subtype).
• Animate Dead

  1B

  Enchantment — AuraB

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

  1B

  SorceryB

  Exhume puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Hell's Caretaker

  3B

  Creature — HorrorB

  Hell's Caretaker puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Archpriest of Shadows

  3BB

  Creature — Human WarlockB

  Archpriest of Shadows puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Life // Death

  G1B

  Sorcery // SorceryBG

  Life puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Advent of the Wurm

  1GGW

  InstantGW

  Both cards produce the same kind of effect (shared token subtype).
• Kardur's Vicious Return

  2BR

  Enchantment — SagaBR

  Kardur's Vicious Return puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Dance of the Dead

  1B

  Enchantment — AuraB

  Dance of the Dead puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Meren of Clan Nel Toth

  2BG

  Legendary Creature — Human ShamanBG

  Meren of Clan Nel Toth puts Penumbra Wurm onto the battlefield from a graveyard without casting it, so its mana cost is never paid.