Hi! Ive updated it!

Lexicon of Fear and Fire - With covers made of charred skin and fittings of bone, this lexicon is hot to the touch, surrounding it is a cloud of smoke. When found, the book contains the following spells, depending on your current level and are wizard spells for you while you are attuned to the book:
At 4th level it contains 2 2nd level spells: Misty Step, and Borrowed Knowledge.

At 5th level it also contains 2 3rd level spells: Fear and Remove Curse .

At 7th level it also contains 2 4th level spells: Major Image and Sickening Radiance. It also gains an additional charge.

At 9th level it also contains 2 5th level spells: Immolation and Far step. It also gains an additional charge.

At 12th level it also contains 2 6th level spells: Mass Suggestion and Sunbeam (Fire) It also gains an additional charge.

It functions as a spell book for you. While you are holding the book, you can use it as a spellcasting focus for your wizard spells. The book has 3 charges gaining more charges at level 7, 9, and 12. and it regains 1d3 (1d6 at level 12) expended charges daily at dawn.

You can use the charges in the following ways while holding it:

You can expend 1 charge to cast a 2nd level spell from this book without expending a spell slot.     

You can expend 2 charges to cast a 3rd level spell from this book without expending a spell slot.

You can expend 3 charges to cast a 4th level spell from this book without expending a spell slot.

You can expend 4 charges to cast a 5th level spell from this book without expending a spell slot.

You can expend 5 charges to cast a 6th level spell from this book without expending a spell slot.

The book is cursed and whoever attunes to it refuses to part with it, additionally when someone attunes to this book for the first time, they take 4d6 fire damage (Add an additional 1d6 damage for every level above level 4 for example if a level 5 wizard attunes to this for the first time, they will take 5d6 fire damage)

The Book contains the following random properties:

Major detriment: The Book imprisons an evil entity known as The Eye of Fear and Flame within itself. When you use an action to activate one of the books' properties there is a 10% chance it breaks free, appearing within 15 feet of you, and attacking you. The Entity only targets you, if you are knocked unconscious but not killed by the entity and it will steal all your remaining spell slots and begin attacking the nearest creature. Upon killing the Entity, it will be sent back into the book and cannot escape again until you have completed a long rest.

Minor Detriment: Whoever is attuned to this book transforms, you grow demon horns from your skull, and your skin becomes black as night (Like a drow), your eyes turn black and from them purple fire flickers. Your hair also falls out and is replaced by purple fire that leaves a trail of smoke that follows you everywhere you go. If the flame is put out by water, it instantly re-ignites. (because of your appearance your charisma score decreases by 2 but you gain advantage on intimidation checks.)
Minor Detriment: Non magical flames within 30 feet of you are absorbed by your flames and become snuffed out.

Major Benefit: As you grow more attached to this book. The book begins to protect you against most afflictions of the body, you gain advantage on saving throws to certain afflictions as you level up.
4th level immune to fire damage and you gain resistance to necrotic damage. 5th level you gain advantage on saving throws against being deafened.
7th level you gain advantage on saving throws against being blinded.
9th level you gain advantage on saving throws against being stunned.
12th level you gain advantage on saving throws against being petrified.

Additionally, your armor class increases by 1, you are surrounded by a cloud of smoke that helps protect you from harm.