Initially, when Lord Bernard heard that General Achillas had survived his fall, he was not able to stop cursing his luck feeling he was so close yet so far.
But now, hearing the man was tethering along the brink of death instead of being actually dead, suddenly brought great joy to the handsome lord. Because if Achillas had been already dead, he would have had no value in the upcoming ransom negotiations with Alexander.
Thus, Achillas's survival inadvertently led to the worst outcome for him and the best outcome for his hated rival.
Now, just by exchanging the Heeat family's general, Lord Bernard would be able to get rid of his arch enemy, have his father back and take command of the allied army, all in the same single stroke.
It was like shooting three birds with a single stone.
So how could the man not get excited? The golden opportunity he was presented with was too intoxicating.