The Tome of Blood Bonding appears as a seemingly ordinary book upon first glance, with its cover bearing no distinctive markings or inscriptions. Its pages are smooth and pristine, betraying no hint of the dark secrets that lie within. However, its true nature is revealed only to those who are fated to become its master.

Upon receiving the Tome, the reader will find themselves unable to open or perceive its contents. It remains an enigmatic and impenetrable object, seemingly devoid of any purpose or significance. However, as time passes, a subtle yet undeniable urge begins to gnaw at the reader's subconscious—a primal instinct that compels them to offer their own blood to the book.

Once the reader succumbs to this instinct and spills their blood upon the Tome's pages, a profound bond is forged between them. The blood serves as the catalyst for unlocking the book's true potential, transforming it into a conduit of arcane knowledge and power.

1. Invisibility to Outsiders: The writing inscribed within the Tome is invisible to all but its rightful owner and those whom they choose to share its secrets with. This ensures that the knowledge contained within remains safeguarded from prying eyes and unworthy hands.

2. Immutable Size and Weight: Despite containing an infinite number of pages, the Tome maintains a constant size and weight. Its physical dimensions never change, regardless of the vast expanse of knowledge it harbors within its confines.

3. Resistance to Magical Assault: The Tome of Blood Bonding is impervious to most forms of magical damage. Spells and enchantments that seek to harm or destroy it are rendered ineffectual, as if repelled by an unseen force that shields the book from harm.

4. Explosive Defense Mechanism: Any attempt to physically assault the Tome with melee weapons carries a perilous risk. Upon contact, there is a 70% chance that the weapon will trigger a violent explosion, unleashing a devastating blast of force energy within a 30-foot radius. The severity of the explosion scales with the spellcasting level of the attacker, except when the assailant is the rightful owner of the Tome, who remains unharmed by this defensive measure.

5. Attunement Benefits: Once the reader becomes attuned to the Tome of Blood Bonding through the offering of their blood, they gain access to its greatest boon. They are bestowed with the Ritual Caster feat, granting them the ability to ritual cast spells from any class without the need for formal spellcasting training. This empowers the owner to harness the diverse array of magical arts contained within the Tome, transcending the limitations of traditional spellcasting disciplines.

The Tome of Blood Bonding is not merely a repository of knowledge, but a living artifact imbued with a symbiotic bond between itself and its master. Through the communion of blood and will, the owner unlocks the boundless potential of this enigmatic tome, becoming the steward of its arcane legacy.

Upon betrayal, the Tome of Blood Bonding enacts a potent curse upon the attuned wizard, serving as a grim reminder of the consequences of their treachery. The curse manifests in several insidious ways, each designed to torment and hinder the wizard in their pursuit of power and knowledge:

1. Blood Oath Retribution: The curse invokes a blood oath that binds the wizard to the Tome, inflicting upon them a debilitating physical and mental affliction. Whenever the wizard attempts to cast spells, they experience excruciating pain as their own blood rebels against them, sapping their strength and diminishing their magical prowess.

2. Eternal Bondage: The curse imposes an unbreakable bond between the wizard and the Tome, preventing them from ever severing their connection to the accursed artifact. No matter how far they may seek to flee or conceal themselves, the Tome remains an ever-present specter, haunting their every waking moment with reminders of their betrayal.

3. Knowledge Drain: The curse leeches away the wizard's accumulated knowledge and expertise, causing their memories to fade and their magical abilities to wane. Spells once mastered become elusive and unfamiliar, slipping through their grasp like sand through fingers, leaving them bereft of the arcane wisdom they once possessed.

4. Isolation and Paranoia: The curse drives a wedge between the wizard and their allies, sowing seeds of distrust and suspicion that fracture their relationships and isolate them from those they once held dear. Paranoia consumes their thoughts, as they become increasingly convinced that betrayal lurks around every corner, leading to a solitary existence fraught with fear and paranoia.

5. Eternal Torment: Ultimately, the curse condemns the attuned wizard to a fate of eternal torment, trapped in a cycle of suffering and remorse from which there is no escape. Each moment becomes a relentless onslaught of anguish and despair, as the weight of their betrayal bears down upon them with unrelenting force, condemning them to an eternity of regret and penance.

Notes: The attunement bond is made by bleeding for 2d6 damage on the book. Once attuned the book will take on an appearance customized to the owner. After attunement, once betrayed (sold, traded, etc.), the book will curse the attuned wizard.