One of the preparations they made was concerning the advancement requirement for rank 7 of the pathway of telepathy.
For them to become legendary telepaths, they must make a legendary godclad become mad and lose control. They have three methods to do that.
The first method they have is to curse the legendary godclad. They can do this using their fate-weaver slave.
A mental curse that is powerful enough can weaken the minds of legends and make them easily lose control when they liberate their divine beast form.
As long as they have something related to the target, they can curse them from afar, or they can use physical contact with the cursed vessel to curse the target.
This option is very good because of the ranged option, but this option will take time to set up because the fate weaver has to create a cursed vessel and accumulate a lot of curse in it.