Confidence:StrongSolidPlausibleTentativeSpeculative

• Roar of Endless Song

  2GUR

  Enchantment — SagaGRU

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

  2G

  SorceryG

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

  2GUR

  SorceryGRU

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

  2GG

  InstantG

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

  4GG

  Creature — Elephant MountG

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

  2

  ArtifactGRU

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

  3G/WG/W

  Creature — Elephant ClericGW

  Both cards produce the same kind of effect (shared token subtype).
• Assault // Battery

  R3G

  Sorcery // SorceryGR

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

  1G

  Creature — Elf DruidG

  Refuel loop: one card's payoff untaps your lands, paying for the other's activation again — repeatable every turn, and often infinite.
• Bestial Menace

  3GG

  SorceryG

  Both cards produce the same kind of effect (shared token subtype).
• Selvala's Charge

  4G

  SorceryG

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

  1G

  Creature — Human ShamanG

  Both cards produce the same kind of effect (shared token subtype).
• March of the World Ooze

  3GGG

  EnchantmentG

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

  1G

  SorceryG

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

  2GG

  SorceryG

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

  3G

  Creature — Centaur DetectiveG

  Innocuous Researcher untaps lands, fueling Stampeding Scurryfoot's mana-hungry effect.
• Fiery Gambit

  2R

  SorceryR

  Fiery Gambit untaps lands, fueling Stampeding Scurryfoot's mana-hungry effect.
• Time Spiral

  4UU

  SorceryU

  Time Spiral untaps lands, fueling Stampeding Scurryfoot's mana-hungry effect.
• Nissa, Vastwood Seer // Nissa, Sage Animist

  2G

  Legendary Creature — Elf Scout // Legendary Planeswalker — NissaG

  Nissa, Vastwood Seer untaps lands, fueling Stampeding Scurryfoot's mana-hungry effect.
• Elrond, Moon-Reader

  2U

  Legendary Creature — Elf NobleU

  Stampeding Scurryfoot has activated abilities that aren't mana abilities, fueling Elrond, Moon-Reader's activation-trigger.
• Nissa, Worldwaker

  3GG

  Legendary Planeswalker — NissaG

  Nissa, Worldwaker untaps lands, fueling Stampeding Scurryfoot's mana-hungry effect.
• Rewind

  2UU

  InstantU

  Rewind untaps lands, fueling Stampeding Scurryfoot's mana-hungry effect.
• Prophet of Kruphix

  3GU

  Creature — Human WizardGU

  Prophet of Kruphix untaps lands, fueling Stampeding Scurryfoot's mana-hungry effect.
• Bumi, Unleashed

  3RG

  Legendary Creature — Human Noble AllyGR

  Bumi, Unleashed untaps lands, fueling Stampeding Scurryfoot's mana-hungry effect.
• Finale of Revelation

  XUU

  SorceryU

  Finale of Revelation untaps lands, fueling Stampeding Scurryfoot's mana-hungry effect.