With Bostaph 's departure , Slayer recruited Testament drummer Jon Dette .
With Bostaph 's departure , Slayer headlined the 1996 Ozzfest alongside with Ozzy Osbourne , Danzig , Biohazard , Sepultura , and Fear Factory .
With Bostaph 's departure , Slayer recruited Testament drummer Jon Dette , and headlined the 1996 Ozzfest alongside with Ozzy Osbourne , Danzig , Biohazard , Sepultura , and Fear Factory .