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.
Border Keep (Experienced) GC: 0 Experienced - Unique Bow this card. Produce 2 gold.
Limited: If it is your first turn, twice per turn: Put one or more cards in your provinces at the bottom of your deck, refilling face up.
Does this mean that if you choose to use the above limited, that you MUST use it twice, each for at least one card?
Border Keep (Experienced): Limited: If it is your first turn, twice per turn: Put one or more cards in your provinces at the bottom of your deck, refilling face up.
Does this mean that if you choose to use the above limited, that you MUST use it twice, each for at least one card?
No. It is a condition that overrides the general rule that an ability can only be used once per turn (http://rules.l5r.com/CE_Card_features#Abilities). Abilities are never required.