If I use Keirei's ability and target a berserker and my opponent reacts with Halls of the Forgotten. Is giving a personality the poison tokens considered an effect on the berserker?
Bayushi Keirei & Halls of the Forgotten
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.
If I use Keirei's ability and target a berserker and my opponent reacts with Halls of the Forgotten. Is giving a personality the poison tokens considered an effect on the berserker?
Yes.