In addition to using NP Shields, players can use any player’s Shield or the Shield of a House that is not in the game to gain any NP Power Token by paying 2. They can also use ANY Shield on their card and pay 1 to remove 1 White Walker from the Night King’s Terror Pool, returning it to the White Walker Pool. (A reference of these costs are listed on the Ice & Fire Round Mat.) If there are no Power Tokens remaining on an NP House Mat, plotting instead returns Power Tokens from the Terror Pool back to the NP House Mat.