keen and imp. crit

[pisceanmars]

how does this work on weapons with a nat. 20 crit range?

for example, a scythe keened and with imp. crit would have a critical range of ....?

any help would be appreciated.

 

[arwink]

18 - 20.

 

[Crothian]

He's right. Each doubles the Base crit range. The base crit range is a 20 or a chance of 1 out of 20. So, keen doubles that ro 2 out of 20 (or 19-20), and improved cirtical doubles the base which adds or stacks with the keen to become 3 out of 20 or 18-20.