I don't necessarily want spoilers, but...am I going to be fighting a lot of undead and/or things immune to cold? This build will also focus on summons, but definitely built around cold damage. I don't mind if one or two fights make my blasting useless, but if a significant portion of the campaign makes cold a poor choice I'd like to know before we start.
Thanks in advance! You guys always deliver.
...or not :P