Arank one frost bolt is also a good choice for slowing down a single target
Frost nova is your most powerful of these secondary Ccs. You can use Guild wars gold to keep a flag runner from getting away or stop an enemy advance. You will have to be right in the heart of your enemy though so try to use blizzard when your enemy is far away first. They will be slowed down and some may be frozen in place.
Arank one frost bolt is also a good choice for slowing down a single target. Fully talented it has a very short cast time and can halt a fleeing flag carrier.
Class Strategies: Below is a list of common tactics for dealing with specific classes. Each class is very different and requires different strategies to deal with their various abilities. Factors like their talent specs and quality of gear will also play an important part so try to observe these early.
Druid: Druids fights can take a long time if you are not careful or have poor DPS. Their heals are very potent and can negate all of your damage if you are slow. They also specialize in heals over time, which let them quickly focus back on fighting.
And worst of all they are practically immune to your polymorph spell and Ccs like frost nova so you will not have an escape option if things go bad.
