Askild saw that they wouldn't have it easy after all and it looked to be a miscalculation on the part of Birger as the last time he could remember, they were on hostile terms.
There was no way Asmund united them or did he somehow use this way to banner neighboring kingdoms to his cause.
"Earl Jan, why do you ally with Vestfold?" Birger asked, stepping forward but an arrow landed right in front of him as a warning should he continue advancing.
"That voice… You are Birger!?" Jan exclaimed, it was clear from his tone that he was surprised. The audacity of Birger to not only betray his birthplace but bring an invading force was one that Jan could not forgive.
"I challenge you to a duel, Jan, If I win, your forces let us through," Birger said in a stern voice, as he continued his walk towards Jan despite the initial warning arrow.
Creation is hard, cheer me up!