An extremely rare few archivists discover the powers of rune magic manifesting upon their bodies. Much like a sorcerer, these inheritors have glyphic strength running through their veins, passed down through the ages.
Rune Tattoos[]
An inheritor does not learn rune magic through study; instead, the ancient magics are granted to him innately via arcane symbols on his body. New tattoos arrive as the inheritor grows in power, and may even change form given enough time.
An inheritor does not need to prepare his scripts. Instead, each of his scripts appears directly on his body once they are learned in the form of magical tattoos, and remain permanently prepared and cannot be erased: in effect, his scripts known are also his scripts he has prepared. This means that his scripts known must follow the same rules as his scripts prepared in regards to how many he can have of a given level (for example, if he wants to know two 3rd-level scripts, he must know at least two 2nd-level scripts and two 1st-level scripts). Since he cannot prepare scripts, if he wants additional castings of a particular script, he must “learn” it a second time, at which point an additional tattoo (and therefor runic script) appears on his body to grant him the additional castings.
The power of rune tattoos is inherited, and relies on force of will instead of study. As such, the inheritor uses Charisma to determine all abilities related to rune magic and his archivist abilities, including the DCs of his scripts, what level of script he can learn, his study abilities, and so on. This alters rune magic.