Playing Settlers of Catan there have been a few instances where one runs out of Settlements or Cities (the pieces). How I have been playing it is that if you don't have it you can't build it.
However playing the expansion Cities and Knights for the first time I explored the Politics Calender which gives you the special of "Fortress: You may promote strong knights to mighty knights" Only then did I realize that there are only 2 Mighty Knight Token pieces. If the Politics special is to promote to Mighty Knights but only able to perform this for two knights(if they've not been promoted already) then it seems under powered compared to the other Building tree abilities.
My question is: Can you only play the 2 mighty knights during a game because there are only 2 mighty knight pieces?