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.
When you pay an Invest cost, how long does the increased cost persist on the card?
For Example, I play Mobile Troops paying the invest cost. My opponents next action is to play Provoked Violence (0 Yojimbo in play). Does he need to pay 1G or 4G to destroy my Mobile troops. What about if my opponent waits a turn to play Provoked Violence?
When you pay an Invest cost, how long does the increased cost persist on the card?
For Example, I play Mobile Troops paying the invest cost. My opponents next action is to play Provoked Violence (0 Yojimbo in play). Does he need to pay 1G or 4G to destroy my Mobile troops. What about if my opponent waits a turn to play Provoked Violence?
For a card entering play, Invest is a permanent change to the cost of the card.
This will be reflected in the next version of the Comprehensive Rules.