Version

Forbidden Grimoire

NecrobinderPowerAncient
At the end of combat, you may remove a card from your Deck.
Eternal.
  • Effect: playing it puts one stack of the Forbidden Grimoire power on you.
  • Reward: when the fight ends, each stack adds a card-removal reward to the reward screen, which you can take or skip.
  • Stacking: two copies played in one fight give two removals that fight.
  • Eternal: it is Eternal, so the Grimoire itself can never be removed or transformed, and it does nothing during the fight beyond costing 2 Energy.
  • Upgrade: it lowers the cost to 1.
Character
Type
Power
Rarity
Ancient
Cost
21 Energy
Target
Yourself

When to take Forbidden Grimoire

Grab it early from Dusty Tome and similar sources; a removal each fight strips your Strikes and Defends within one act. Upgrade it fast, since 2 Energy for nothing taxes Act 1.

Cards that synergize with Forbidden Grimoire

Wisp
Skill
0
Gain .
Exhaust.
Wisp and Delay cover the Energy it eats on the turn you play it.Gain .
Exhaust.
Delay
Skill
2
Gain 11 Block.
Next turn,
gain .
Wisp and Delay cover the Energy it eats on the turn you play it.Gain 11 Block.
Next turn,
gain .
Soul
Skill
0
Draw 2 cards.
Exhaust.
Funerary Mask fills the draw pile with Souls that dig for it early.Draw 2 cards.
Exhaust.
Invoke
Skill
1
Next turn, Summon 2 and gain .
Invoke banks Energy for a Grimoire turn.Next turn, Summon 2 and gain .
Right Hand Hand
Attack
0
Osty deals 4 damage.
Whenever you play a card that costs or more, return this to your Hand from the Discard Pile.
Right Hand Hand triggers on cards that cost 2 or more, and Forbidden Grimoire is oneOsty deals 4 damage.
Whenever you play a card that costs or more, return this to your Hand from the Discard Pile.
Danse Macabre
Power
1
Whenever you play a card that costs or more, gain 4 Block.
Danse Macabre triggers on cards that cost 2 or more, and Forbidden Grimoire is oneWhenever you play a card that costs or more, gain 4 Block.

Relics that synergize with Forbidden Grimoire

Funerary Mask
Funerary Mask fills the draw pile with Souls that dig for it early.At the start of each combat, add 3 Souls into your Draw Pile.
Permafrost
Permafrost triggers on Powers played, and Forbidden Grimoire is oneThe first time you play a Power each combat, gain 7 Block.
Lost Wisp
Lost Wisp triggers on Powers played, and Forbidden Grimoire is oneWhenever you play a Power, deal 8 damage to ALL enemies.
Mummified Hand
Mummified Hand triggers on Powers played, and Forbidden Grimoire is oneWhenever you play a Power, a random card in your Hand is free to play that turn.
Game Piece
Game Piece triggers on Powers played, and Forbidden Grimoire is oneWhenever you play a Power, draw 1 card.
Intimidating Helmet
Intimidating Helmet triggers on cards that cost 2 or more, and Forbidden Grimoire is oneWhenever you play a card that costs or more, gain 4 Block.

Changes by version

  1. Forbidden Grimoire card's card removal reward will now show up after Battleworn Dummy fight if you are successful
  2. 12 Feb 2026Upgradeadds Retain1 less costInternal playtest
    Upgrade changed from adding Retain to costing 1 less
  3. 5 Feb 2026TextInternal playtest
    Forbidden Grimoire card now specifies that its card removal is optional
All 6 patch notes3 older
  1. 24 Jul 2025Upgradeadds Innateadds RetainInternal playtest
    Upgrade changed from adding Innate to adding Retain
  2. 10 Apr 2025Bug fixInternal playtest
    Forbidden Grimoire card now stacks card removal rewards correctly
  3. 13 Mar 2025ArtInternal playtest
    Card portraits

Internal playtest notes are from before the Early Access release. Names and numbers in them can differ from the game today.

Purchase today
If you haven't bought Slay The Spire 2 yet, it's time. Support the devs, they made an amazing game.Get it on Steam