Is the Battle duel created by Do Not Delay from Do Not Delay or from the Personality who permanently gains the ability?
Do Not Delay and The Shadowed Estate of the Scorpion
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.
From the Personality. See here, exception 3: Costs and effects of traits and abilities given to other cards, copied from other cards, or on created cards, come from the card they are currently on.