Speaking of immortals, in my Ptolemaic campaign in 1.1 I fought the Seleucid faction leader when I attacked Seleucia - and he just would not die. He was the only guy left in the town square, surrounded by my men, and he just would not die. I eventually won by literally shoving him off the square and waiting out the three minutes. He was still alive when that time was up.

Glitch? Or did he just have an incredible number of hitpoint-giving traits?