I get the feeling that Lawrence was pretty much using his all to win this duel. While the same for Amarty as well.(maybe not since he didnt really use his family power to do it)

Therefore in a duel with the stake being all your monetary worth and pride, Horo must have felt quite good.

BTW, about pyrite, I have found some before and dug it out of the rocks that embedded it. It does look like bling. Now about the wolf god... where can I find one.