Familiarity, the first myth of reality: What you know the best you observe the least.
Devotion, the second myth of reality: The faithfull are most hurt by the objects of their faith.
Conviction, the third myth of reality: Only those who seek the truth can be decieved.
Fellowship, the fourth myth of reality: As the tides of war shift, so do loyalties.
Trust, the fifth myth of reality: Every truth holds the seed of betrayal.
I notice no one is saying shadow warriors aint overpowered =P and no easy fix like banning nurgles rot or slings, which is to bad since they're the far coolest warband by aestetics.
Although not an easy fix per se, in my group we made the following changes and they became quite usable:
Elves have T3 as a racial maximum.
Sniper skill is removed.
Familiar is available to all wizards*.
Runestones available to all wizards and priests (they use a holy version rather than a magical one)**.
Shadow Warriors start with 5 xp.
Pool of Shadow and Shadowbind are increased in difficulty by 1.
*Not really needed for balance; we just did that because familiars are cool .
** Again, not really needed for balance - we just added it because it added more fun for us.