The Wisdom of War

While on a routine mission to a new world SG-1 gets caught in a fire fight and is captured by a never before seen Goa'uld. This Goa'uld has certain plans for some members of SG-1 including taking one of them as a host. Will SG-1 stop this former System Lord before all of the universe becomes her empire? And what would that victory cost them? (Character deaths)