Tar embraced

"Those fully dedicated to Boroxis may eventually become embraced by its form. However, the connection to Boroxis is a weak one and requires time and willpower to create, as it is a forgotten deity that few recall. Once this happens, however the cleric will be able to use its powers as if they were their own and thusly becomes a powerful warlock. However, the wisdom that one needs to initiate this process is plenty enough to drive one to the brink of lunacy, not to mention the eldritch knowledge one gains after becoming connected with Boroxis."