Hypersmurf said:
I absolutely rule that Bane doesn't affect zombies.
They're immune to mind-affecting spells.
-Hyp.
Good point.
However, you avoided my real question:
Btw, I'd like your careful consideration of the following scenario.
NPC A is PC B's brother. NPC A likes PC B, but PC B hates NPC A because NPC A is an assassin.
NPC A is hired to kill PC C who is a friend of PC B.
PC B casts the Bane spell. Does it affect NPC A who is at the moment, trying to kill PC C?
According to the literal book, it does not. NPC A is not unfriendly to PC B, in fact he likes him because he is his brother. So, NPC A is not the enemy of PC B. PC B's feelings on the matter are irrelevant.
Is this how you rule as a GM?
Bane is a unique spell in the core rules. It is the only one with "enemies" specified not as part of flavor text, but as part of the rules. There are other spells that discuss enemies as flavor text, but they tend to then talk about foes or opponents in the rules text.
So, I am not sure you can actually justify spell rules off the Bane spell too much.