Sometimes it does challenge us as DM's but thats half the fun. As a DM your suppose to think on your feet and make it fun. With my games i've had to adapt my campaign as the way the game played,  took me by surprise. I have also had overpowered creatures in play which may have been too strong but I adapted it to make it fun.  It's the DM's job.  Paladins are strong but so can other races be if given the right circumstances.  I can understand adapting for a campaign's but it only take a lightbulb moment like auras are not useable in this room due to dark magic or something.  So I completely disagree with saying you can not use the race.  
DM is whining - I bought a Monster manual too it is only a guideline to aid the DM it's not the be all and end all of a campaign. If it is you need to be more inventive.
				
			DM is whining - I bought a Monster manual too it is only a guideline to aid the DM it's not the be all and end all of a campaign. If it is you need to be more inventive.
 
				 
 
		
 
 
		 
 
		 
 
		