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.
A player, 2 July 2015
Ninja Open: Create a battlefield (not at any Province). Assign Kumoru to attack there and another player's target unbowed Personality to defend there. Fight a battle there. Battle resolution there will not destroy Personalities. Lose 2 Honor.
So since kumoru doesn't say no other people can be in the battle field it is assumed that people can cav in personalities and move people to the battle etc. So here's my question.
If i personality uses cavalry to move into this battle field can the use it again during the actual engage step of the battle phase?
Jon Palmer (rules official), 4 July 2015
Ninja Open: Create a battlefield (not at any Province). Assign Kumoru to attack there and another player's target unbowed Personality to defend there. Fight a battle there. Battle resolution there will not destroy Personalities. Lose 2 Honor.
So since kumoru doesn't say no other people can be in the battle field it is assumed that people can cav in personalities and move people to the battle etc. So here's my question.
If i personality uses cavalry to move into this battle field can the use it again during the actual engage step of the battle phase?
The player ability Cavalry is still once per turn, so if it's used during Kumoru's ambush, you will not be able to use it during your normal attack.