Piratecat said:
Can you give an example of these? Sounds interesting.
The multiclassing is an interesting option I hadn't considered, but it might not fit the character - he's a single class, not even any prestige classes.
Im assuming you mean Velendo
Advanced players guide gives the following for 21th level and higher clerics:
Besides bab, save and spell progression (more spells, no spells over 9th) there are the following:
21th: diety's favor 1/week a small boost on a roll (max +4 profane bonus), this is DM controlled, but the player may hint

22th: better turning
23th: more turning , and diety's favor 2/week
24th: even better turning
25th: diety's favor 3/week
26th: more and better turning
27th: diety's favor 4/week
28th: still better turning
29th: more turning, and diety's favor 5/week
30th best turning, and "divine intervention" (1/3months massive help, at dm discretion)