The spell "Horrific Wail" which you gain from having disciple death magic, and disciple water magic (lvl 2 death and lvl 2 water), it is supposed to after 2 turns of casting giving all the enemies -2 initiative (+1 per water shard) and -2 spell resist (+1 per death shard).
Trouble is, the spell does not decrease the spell resist of enemies, which is half the spell...
(and besides that, usually isnt worth the 2 turns, but thats a whole different matter ^^)
Sincerely
~ Kongdej