Shapechanger. The mimic can use its action to polymorph into any book or back into its true, amorphous form. Its statistics are the same in each form. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.

Adhesive (Object Form Only). The mimic adheres to anything that touches it. A creature which picks up the mimic can’t be disarmed of it unless it succeeds in a DC 9 Strength check, made with disadvantage. The mimic can only adhere to one creature at a time. The mimic has advantage on attack rolls against any creature adhered to it.

False Appearance (Object Form Only). While the mimic remains motionless, it is indistinguishable from an ordinary weapon.

Wield (Object Form Only). Can be wielded. If wielded, the mimic takes its turn after the wielder (even if the wielder is unconscious) and can take the following actions:

• Attack


• Cast a spell


• Disengage


• Dodge


• Use an object (amorphous form only)

Whilst this book is wielded, add the following to the wielder’s skill checks:

• Arcana +3


• History +3


• Religion +3

You can also store 3 unused spell slots each long rest and add these to your pool for the following day.

Bargain of Opportunity (When wielded). Before each of its turns, the wielder must roll a Charisma Saving Throw (DC 12) - depending on how well the mimic is looked after, the GM may decide that this is done at advantage or disadvantage.

On a pass, the mimic acts in a way that benefits the wielder. On a fail, the mimic bites the wielder.

Innate Spellcasting

The mimic’s innate spellcasting ability is Intelligence (spell save DC 16, d20+6 to hit with spell attacks).

Critical Hit (When wielded). When you score a critical hit with a magic spell attack or the target rolls a critical fail on their saving throw, the target takes an extra 2d8 acid damage.

It can innately cast the following spells, requiring no material components:

• At will:
  
  • Blade Ward (self and wielder)
  
  
  • Guidance (self and wielder)
  
  
  • Resistance (self and wielder)
  
  
  • Healing Word (self and wielder)

• 3 per day (each):
  
  • Shield reaction (1st level)
  
  
  • Melf's Acid Arrow (2nd level)
  
  
  • Counterspell reaction (3rd level)
  
  
  • Hypnotic Pattern (3rd level)

• 1 per day (each):
  
  • Vitriolic Sphere (4th level)
  
  
  • Counterspell reaction (4th level)