Quote:
	
	
		| 2) Empoisoners (C'tis) come with Skele-Spam built in. 
 | 
	
  I believe you misspelled  
swarm  
assassin's are most useful for irritating opponents, and increasing the micro-management cost, which is really the most important and limited resource in the end-game...
also, killing an occasional battlefield commander who is moving troops around can mean the difference between victory or defeat