Can you declare an attack without any personalities in play?
Declaring an attack
A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
Can you declare an attack without any personalities in play?
Yes, you can; no rule requires you to have a Personality in play to do so.