Crimsonwood 2

The problem is that paladins have no unique abilities. Literally all of their skills are weaker or equal versions of something another class has D:

Yes, but the combination is unique.

For instance, suppose a room blocked by a fiery door dealing an unavoidable 10k hp environmental damage (which Magic Guard is useless against). To remove the barrier, someone must go to the other side and use an ice-based attack to kill/break the thing generating the fire.