I dont own the army book so I dont really have an easily available source for reference which is why im asking here.
So basically how do heralds work? Is it a case of, for example, you buy a Tzeentch herald and he can be placed in any unit like bloodletters and he conveys a +1 to their ward save? Or is he stuck with only being able to give this bonus to units of his god? Ive always thought it was the first but I just wanted some confirmation after a game I played the other week.