Earning enough ritual rewards will allow you to use Sigil Shards in order to create additional Crumbling Scriptures directly from the Tome of Want. While the Tome of Want has an active ritual, power it up by

• Completing playlist and Episode activities • Defeating powerful combatants in Episode activities • Defeating other Guardians

Completing the ritual will grant a reward determined by the Scriptures used to activate the Tome of Want.