Cold Mastery vs Immune Creatures.

[Levirax]

Hey, I cant find an answer for this question, just a lot of math problems that I dont ever understand.

Can I deal damage on cold immune creatures with a reasonable level of cold mastery?
If not, whats the point of going to maximize this skill?

Thanks!

[Aspera]

This thread should help explain the immunities for you:

http://forums.diabloii.net/showthread.php?t=658719