Question 1: For the card support like siegfried, rashotep and taki that makes cards have a blank text or turn them face down and that don't have a duration stated (it does not say until the end of the turn), do they stay blank or turned until the end of the game?
Question 2: For Xianghua's R:, can you play any foundation you would like, even if that foundation would not be normally played? Like adding cards to the staging area that have no matching symbol with Xianghua.