by Redbeard » Tue Aug 14, 2012 6:05 am
The relevant rules are:
Page 112 rulebook:
"Units in your army treat Allies of Convenience as enemy units that cannot be charged, shot, targeted with psychic powers or have templates or blast markers placed over them. However, if a psychic power, scattering Blast weapon or other ability that affects an area hits some of these Allies of Convenience, they will be affected along with any friendly or enemy units. This means that, for example, Allies of Convenience units:"
Page 75 Daemon codex:
"Aura Of Decay
...Aura of Decay is a ranged weapon, but the Daemon may be in close combat at the time it uses it, as may the targets. When used, all enemy models within 6" of the daemon automatically suffer a Strength 2 hit with AP- (roll to wound as normal)"
Nothing in the rules indicates that it won't work.
"All very successful commanders are prima donnas and must be so treated."
George S. Patton