Prophet:
If you want a fun, skilled, immortal prophet -- wait for Etimmu the Wraith Lord and prophetize him.
He's one of the better national heroes in the game, considering he comes with d3/h2, immortality, etherealness, equipment, nice stats, and all but the foot slots (being mounted).
If you don't want to wait or wish to maximize holy, consider an Archbishop.
Lictors:
Might be nice if you've built the laurels to make summoning more efficient. It's possible to reanimate them with an H4 (ex Archbishop prophet), if memory serves.
Can't go underwater, 'tho.
Eventually, wights -- a step up from lictors -- can be summoned in decent numbers at a time via Legion of Wights.
Reanimation:
Priest skill affects both number and type. You need a certain level to reanimate longdead horse, for instance. Death magic is irrelevant to reanimation. Helps for summons, 'tho.
Resources:
Think ores, metals, wood, that sort of thing. if you're in the tundra, it's tough to get enough metal to make heavy armor.