the black list timer in the fates.. is how long it waits before it black lists. so if you set your fates to 1% and no one does the fate for the 120s or what ever your timer is set to it will Blist the fate.
or if there is no progression in hte fate for x amount of time (what ever you have the fate blist timer set to) it will blist the fate.
or if there is no progression in hte fate for x amount of time (what ever you have the fate blist timer set to) it will blist the fate.