How about this?

Elders of the cabal have the ability to induct pledges on a probationary basis, similar to partial empowerment. These inductees will have access to the cabal and powers up to a pre-set point until the leaders have had a chance to monitor and/or interview them and are satisfied they belong.

If this gets implemented, please note that I would like a goldfish form for a water shifter. Also, when I "outfit", please be sure my character receives a pouch of fish food.