Confidence:StrongSolidPlausibleTentativeSpeculative

• Pip-Boy 3000

  1

  Artifact — EquipmentC

  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.
• Fiery Gambit

  2R

  SorceryR

  Fiery Gambit untaps all (or many) permanents, refreshing Den of the Bugbear's tap activation.
• Innocuous Researcher

  3G

  Creature — Centaur DetectiveG

  Innocuous Researcher untaps all (or many) permanents, refreshing Den of the Bugbear's tap activation.
• Goblin Rabblemaster

  2R

  Creature — Goblin WarriorR

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

  2R

  EnchantmentR

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

  2R

  Creature — Goblin MercenaryR

  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.
• Beledros Witherbloom

  5BG

  Legendary Creature — Elder DragonBG

  Beledros Witherbloom untaps all (or many) permanents, refreshing Den of the Bugbear's tap activation.
• Formidable Speaker

  2G

  Creature — Elf 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.
• 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 Den of the Bugbear's tap activation.
• Bumi, Unleashed

  3RG

  Legendary Creature — Human Noble AllyGR

  Bumi, Unleashed untaps all (or many) permanents, refreshing Den of the Bugbear's tap activation.
• General Kreat, the Boltbringer

  2R

  Legendary Creature — Goblin SoldierR

  Both cards produce the same kind of effect (shared token subtype).
• Krenko, Baron of Tin Street

  2R

  Legendary Creature — GoblinR

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

  3G

  EnchantmentG

  Wilderness Reclamation untaps all (or many) permanents, refreshing Den of the Bugbear's tap activation.
• Seedborn Muse

  3GG

  Creature — SpiritG

  Seedborn Muse untaps all (or many) permanents, refreshing Den of the Bugbear's tap activation.
• Sword of Feast and Famine

  3

  Artifact — EquipmentC

  Sword of Feast and Famine untaps all (or many) permanents, refreshing Den of the Bugbear's tap activation.
• Gathering of Darkness

  3B

  SorceryB

  Both cards produce the same kind of effect (shared token subtype).
• Along the Crooked Way

  2B

  EnchantmentB

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

  2B

  Kindred Enchantment — GoblinB

  Both cards produce the same kind of effect (shared token subtype).
• Siege-Gang Commander

  3RR

  Creature — GoblinR

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

  2GG

  EnchantmentG

  Nature's Will untaps all (or many) permanents, refreshing Den of the Bugbear's tap activation.
• Emrakul, the Exigent Doom

  10

  Legendary Creature — EldraziC

  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.
• Awakening

  2GG

  EnchantmentG

  Awakening untaps all (or many) permanents, refreshing Den of the Bugbear's tap activation.