Confidence:StrongSolidPlausibleTentativeSpeculative

• Magus of the Candelabra

  G

  Creature — Human WizardG

  One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.
• Innocuous Researcher

  3G

  Creature — Centaur DetectiveG

  Innocuous Researcher untaps all (or many) permanents, refreshing Gnottvold Slumbermound's tap activation.
• Fiery Gambit

  2R

  SorceryR

  Fiery Gambit untaps all (or many) permanents, refreshing Gnottvold Slumbermound's tap activation.
• Zurgo Stormrender

  RWB

  Legendary Creature — Orc WarriorBRW

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

  1

  ArtifactC

  One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.
• The War Games

  2WW

  Enchantment — SagaW

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

  1W

  Creature — Human BardW

  Both cards produce the same kind of effect (shared token subtype).
• Saryth, the Viper's Fang

  2GG

  Legendary Creature — Human WarlockG

  One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.
• Prophet of Kruphix

  3GU

  Creature — Human WizardGU

  Prophet of Kruphix untaps all (or many) permanents, refreshing Gnottvold Slumbermound's tap activation.
• Giantbaiting

  2R/G

  SorceryGR

  Both cards produce the same kind of effect (shared token subtype).
• Bumi, Unleashed

  3RG

  Legendary Creature — Human Noble AllyGR

  Bumi, Unleashed untaps all (or many) permanents, refreshing Gnottvold Slumbermound's tap activation.
• Stadium Headliner

  R

  Creature — Goblin WarriorR

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

  3U

  SorceryU

  Both cards produce the same kind of effect (shared token subtype).
• Najeela, the Blade-Blossom

  2R

  Legendary Creature — Human WarriorBGRUW

  Both cards produce the same kind of effect (shared token subtype).
• Bone-Cairn Butcher

  1RWB

  Creature — DemonBRW

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

  2U

  Creature — Human WizardU

  One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.
• Seedborn Muse

  3GG

  Creature — SpiritG

  Seedborn Muse untaps all (or many) permanents, refreshing Gnottvold Slumbermound's tap activation.
• Wilderness Reclamation

  3G

  EnchantmentG

  Wilderness Reclamation untaps all (or many) permanents, refreshing Gnottvold Slumbermound's tap activation.
• Sword of Feast and Famine

  3

  Artifact — EquipmentC

  Sword of Feast and Famine untaps all (or many) permanents, refreshing Gnottvold Slumbermound's tap activation.
• Mardu Monument

  2

  ArtifactBRW

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

  2B

  Creature — Human WarriorB

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

  1R

  Creature — Goblin SoldierR

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

  5BG

  Legendary Creature — Elder DragonBG

  Beledros Witherbloom untaps all (or many) permanents, refreshing Gnottvold Slumbermound's tap activation.
• Venerated Stormsinger

  3B

  Creature — Orc ClericB

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

  1G

  Creature — Human DruidG

  One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.