[Saxon]

I can see a nice use for assassins if you are playing Ermor in multiplayer. You know your enemies will buy lots of priests, who hurt your undead, but are useless in hand to hand. If you send your assassins in against an army with lots of priests and only a couple of other commanders, the probability is that they will attack priests.

Any assassin will kill a priest, so you likely to get results with no loss. The main (or at least my main) counter to your undead has just been weakened and you have recouped most of the cost of your assassin. One more success and you are costing them more than you are paying. (I think priests cost 50 and assassins 60)