This happened recently in a game:
I had three tiles in hand, one of which was a castle. A tile appeared in black market, which I wanted to buy and play.
I couldn't buy it before playing, as I couldn't hold more tiles. So I played the castle, making space for the tile: then I bought the tile; then I used my castle privilege and played the tile. So effectively, my castle action was paused while I made the purchase.
According to the rules, I am not sure if this was right, but the system allowed me to do it so I did it.
I had three tiles in hand, one of which was a castle. A tile appeared in black market, which I wanted to buy and play.
I couldn't buy it before playing, as I couldn't hold more tiles. So I played the castle, making space for the tile: then I bought the tile; then I used my castle privilege and played the tile. So effectively, my castle action was paused while I made the purchase.
According to the rules, I am not sure if this was right, but the system allowed me to do it so I did it.