In the ancient days, before humanity dwelled on Golarion, the Vault Builders had need of something smaller in scale than the great vault seeds so they could finish their worlds as they liked. They took a small gem and wrote a word of power upon it. They gave it eyes so it could see and legs so it could walk, and made it wise. These creatures are known as kaseshi by scholars who have encountered them, though their true name—the one that brought them into being—is likely considerably more powerful.
Each kasesh bears a single word of power on their emerald body, from which they draw their mind and their magic. A kasesh with the word “Steel” or “Flame” is a single-minded creature, though it encompasses all possible permutations of meaning that the word possesses. A kasesh named “Home” or “Sorrow” has a far more complex psyche, and rumor claims that Elder Architect Unknown of Nex bears the word “Memory.” Unsurprisingly, many scholars are highly interested in the words on the kaseshi; unlike Thassilonian rune magic, no one has managed to decode or make use of the language of the Vault Builders yet.
