If I cast the Tzeentch Daemons psychic power flickering flames (+1 to wound for shooting) on the same unit twice, does it stack?
All I could find about cumulative bonuses is the following, which doesn't appear to apply in this situation.
BRB wrote:Q: Lots of aura abilities say they grant an ability to nearby units that are within range of any such models. Are the bonuses cumulative (i.e. if I am within range of two models with identical aura abilities, is the bonus doubled)?
A: Unless stated otherwise, no. The bonus for such an ability applies once if any (i.e. one or more) of these models are within range.