We just purchased this game and, after the first play were very impressed.
During just the second session the MERCANNARIUS came up and the text on the card is not quite specific enough.
"You attack the opposite card. For each 3 Sestertii you pay you may increase your battle die roll by 1."
That makes sense but the question arose, "can you pay to increase the value AFTER you have rolled?"
Obviously, you must be able to afford the increase, so I can easily argue both sides of the question.
Is there an OFFICIAL ruling on this?
If it wasn't after the roll how would you know how much you needed to spend for your attack to succeed?