Confidence:StrongSolidPlausibleTentativeSpeculative

• Derevi, Empyrial Tactician

  GWU

  Legendary Creature — Bird WizardGUW

  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.
• Corridor Monitor

  1U

  Artifact Creature — ConstructU

  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.
• Deceiver Exarch

  2U

  Creature — Phyrexian ClericU

  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.
• Pestermite

  2U

  Creature — Faerie RogueU

  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.
• Giant-Sized Flying Ant

  3U

  Creature — InsectU

  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.
• Zealous Conscripts

  4R

  Creature — Human WarriorR

  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.
• Intellectual Offering

  4U

  InstantU

  Intellectual Offering untaps all (or many) permanents, refreshing Grimoire of the Dead's tap activation.
• Unstoppable Plan

  2U

  EnchantmentU

  Unstoppable Plan untaps all (or many) permanents, refreshing Grimoire of the Dead's tap activation.
• Unwinding Clock

  4

  ArtifactC

  Unwinding Clock untaps all (or many) permanents, refreshing Grimoire of the Dead's tap activation.
• Seedborn Muse

  3GG

  Creature — SpiritG

  Seedborn Muse untaps all (or many) permanents, refreshing Grimoire of the Dead's tap activation.
• Innkeeper's Talent

  1G

  Enchantment — ClassG

  Counter synergy: both cards work with the same kind of counters, so their effects stack in a counters deck. Not necessarily a closed loop on its own.
• Paradox Engine

  5

  Legendary ArtifactC

  Paradox Engine untaps all (or many) permanents, refreshing Grimoire of the Dead's tap activation.
• Dramatic Reversal

  1U

  InstantU

  Dramatic Reversal untaps all (or many) permanents, refreshing Grimoire of the Dead's tap activation.
• Ajani, Nacatl Pariah // Ajani, Nacatl Avenger

  1W

  Legendary Creature — Cat Warrior // Legendary Planeswalker — AjaniRW

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Ajani, Nacatl Pariah's enter-the-battlefield effect.
• Agrus Kos, Spirit of Justice

  2RW

  Legendary Creature — Spirit DetectiveRW

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Agrus Kos, Spirit of Justice's enter-the-battlefield effect.
• Phlage, Titan of Fire's Fury

  1RW

  Legendary Creature — Elder GiantRW

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Phlage, Titan of Fire's Fury's enter-the-battlefield effect.
• Odric, Blood-Cursed

  1RW

  Legendary Creature — Vampire SoldierRW

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Odric, Blood-Cursed's enter-the-battlefield effect.
• Emeritus of Truce // Swords to Plowshares

  1WWW

  Creature — Cat Cleric // InstantW

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Emeritus of Truce's enter-the-battlefield effect.
• Season of Growth

  1G

  EnchantmentG

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Season of Growth's enter-the-battlefield effect.
• Serene Sleuth

  1W

  Creature — Human DetectiveW

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Serene Sleuth's enter-the-battlefield effect.
• Wildfire Devils

  3R

  Creature — DevilR

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Wildfire Devils's enter-the-battlefield effect.
• Spreading Plague

  4B

  EnchantmentB

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Spreading Plague's enter-the-battlefield effect.
• Solitude

  3WW

  Creature — Elemental IncarnationW

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Solitude's enter-the-battlefield effect.
• Uro, Titan of Nature's Wrath

  1GU

  Legendary Creature — Elder GiantGU

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Uro, Titan of Nature's Wrath's enter-the-battlefield effect.
• Orcish Bowmasters

  1B

  Creature — Orc ArcherB

  Grimoire of the Dead returns creatures from the graveyard to the battlefield, re-firing Orcish Bowmasters's enter-the-battlefield effect.