megamania
Hero
Evil Monkey said:In 3.0, when keen and Improved Critical stacked, you could do the following.
Take an iron/steel weapon with a threat range of 18-20 (such as a scimitar)
Put keen on it - threat range increases to 15-20.
Improved Critical - threat range increases to 12-20.
Take 4 levels in Disciple of Dispater (Book of Vile Darkness) and gain the iron power ability
Final critical threat range - 9 - 20!
I did that once and the game got boring. It was TOO easy.