History of By Sigil and Scripture

A triumph from Episode: Heresy (worth 15 points): "Acquire Permanent Scriptures and receive ritual rewards to gain the ability to create Crumbling Scriptures within the Tome of Want."

How to complete

1. Unlock the Tome of Want by reaching rank 3 with the Shaping Slab vendor (per TheGamer's guide).
2. Acquire Permanent Scriptures and socket them to start rituals, then collect the ritual rewards. TheGamer explains that scriptures come as categories (reward type) and modifiers.
3. Completing this triumph unlocks creating Crumbling Scriptures in the Tome.

Unconfirmed

The sources I opened do not say how many Permanent Scriptures or ritual rewards are required, or how Crumbling Scriptures are made. Do not rely on any specific number. It also is not confirmed which seal this belongs to; it is an Episode: Heresy triumph (likely the Heretic seal).