This circlet is a crown of clear thorns that wrap around the skull and dig into the brain bestowing the user with the knowledge and power it holds. each tip of the thorny crown is set with a diamond that seemingly has a red hue to it. 

Dormant State

• Twenty-five spells are sent flying into your mind. you can prepare them as normal 
• When you prepare wizard spells using the grimoire, the number of wizard spells you can prepare increases by 1.
• You gain dark vision out to 60 ft if you already have dark vision then it is increased by 60ft. You can see through magical darkness 
• your intelligence becomes 20 

Awakened State

• You have advantage on saving throws against spells and magical effects.
• When you prepare wizard spells using the grimoire as your spellbook, the number of spells you can prepare increases by 1 again.
• your intelligence becomes 22

Exalted State

• You can now use your Arcane Recovery feature twice between long rests, rather than once.
• When you prepare wizard spells using the grimoire as your spellbook, the number of spells you can prepare increases by 1 again.
• Your darkvision turns into true sight out to 60ft 
• your intelligence becomes 24 

Notes: The user has to endure an entire rest of excruciating pain and headaches (DC13 con save)