The FAQ says this:
Q: If Old Zogwort rolls on the Weirdboy psychic power chart and gets a psychic power that is resolved as a Shooting attack (specifically Frazzle or Zzap) may he re-roll this power? If not then can he ignore the power for the purposes of expending Warp Charge points? (p61)
A: No to both questions.
As our readers know, Old Zogwort is BS0 and therefore cannot shoot. He is also a Warphead, which states that he may "re-roll the dice to see which psychic power he uses." There are two ways to interpret this FAQ:
- If Old Zogwort rolls a shooting psychic power on his first roll he cannot use it to shoot (because BS0) and cannot use his Warphead re-roll to try and get one that he can use (because FAQ).
- Old Zogwort can still use his Warphead re-roll, if available, but yes, it is totally possible for him to wind up with a power he cannot use; if he winds up stuck with a psychic power that he can't use (because BS0) he gets no special exemption.
Personally I read it as #2. So if you wind up with a 1, 2, or 3:
- 'Eadbanger - not actually a shooting attack; Old Zogwort still nukes himself (note the FAQ doesn't mention 'Eadbanger, nor does the FAQ define 'Eadbanger as a shooting attack on page 3) if he isn't in combat, and still gets a power weapon if he is.
- Frazzle - Old Zogwort can't use it to shoot, but still gets a power weapon if he's in combat.
- Zzap - Old Zogwort can't use it to shoot, but still gets a power weapon if he's in combat.