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.
Togashi Satsu Exp., Exp.2 and Exp.3 all have the trait "Satsu need not bow to cast Kihos." But can he still cast Kihos if he is already bowed? The argument is whether the trait can or cannot waive a cost that could not be paid in the first place.
Thank you.
[Mod edit: Thread title. -ZF]
Togashi Satsu Exp., Exp.2 and Exp.3 all have the trait "Satsu need not bow to cast Kihos." But can he still cast Kihos if he is already bowed? The argument is whether the trait can or cannot waive a cost that could not be paid in the first place.
Yes, as long as the Kiho action's constraints block doesn't call for targeting an unbowed Personality to perform it.
In general, costs can be waived or substituted even if you can't pay them. For example, if you waive a card's Gold cost, you needn't have sufficient unbowed Gold lying around to do so.