Confidence:StrongSolidPlausibleTentativeSpeculative

• Slash, Reptile Rampager

  3RR

  Legendary Creature — Mutant Berserker TurtleR

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

  2G

  Creature — Elk MutantG

  Both cards produce the same kind of effect (shared token subtype).
• Sally Pride, Lioness Leader

  3WW

  Legendary Creature — Cat Mutant RebelW

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

  1BB

  Creature — Rat MutantB

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

  4BB

  Creature — Bat MutantB

  Both cards produce the same kind of effect (shared token subtype).
• Splinter & Leo, Father & Son

  2W

  Legendary Creature — Mutant Ninja Rat TurtleW

  Both cards produce the same kind of effect (shared token subtype).
• Jennika, Bad Apple Big Sister

  4W

  Legendary Creature — Mutant Ninja TurtleW

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

  3W

  Artifact — EquipmentW

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

  2WW

  Creature — Mutant RebelW

  Both cards produce the same kind of effect (shared token subtype).
• Vault 12: The Necropolis

  4BB

  Enchantment — SagaB

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

  5

  Artifact — VehicleC

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

  B

  SorceryB

  Reanimate puts Old Hob, Alleycat Blues 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 Old Hob, Alleycat Blues 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 Old Hob, Alleycat Blues onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Recurring Nightmare

  2B

  EnchantmentB

  Recurring Nightmare puts Old Hob, Alleycat Blues 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 Old Hob, Alleycat Blues onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Animate Dead

  1B

  Enchantment — AuraB

  Animate Dead puts Old Hob, Alleycat Blues onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Exhume

  1B

  SorceryB

  Exhume puts Old Hob, Alleycat Blues onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Life // Death

  G1B

  Sorcery // SorceryBG

  Life puts Old Hob, Alleycat Blues 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 Old Hob, Alleycat Blues onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Victimize

  2B

  SorceryB

  Victimize puts Old Hob, Alleycat Blues onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Soul Exchange

  BB

  SorceryB

  Soul Exchange puts Old Hob, Alleycat Blues onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Ascent of the Worthy

  1WB

  Enchantment — SagaBW

  Ascent of the Worthy puts Old Hob, Alleycat Blues onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Annie Joins Up

  1RGW

  Legendary EnchantmentGRW

  Annie Joins Up makes Old Hob, Alleycat Blues's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Necromancy

  2B

  EnchantmentB

  Necromancy puts Old Hob, Alleycat Blues onto the battlefield from a graveyard without casting it, so its mana cost is never paid.