When held in the offhand, Focus items can add to your maximum amount of available manna. Some will have no requirements attached to using them, but will usually only yield a few extra. More powerful versions will have a requirement, for example, Fire Magic 7+; in this case you would need to have your Fire Magic attribute at level 7 or greater to gain the full benefit of the focus. Guild wars gold as you can imagine this is only beneficial if you have a focus that applies to a magic line that your character uses. One is available for each casting-related attribute, as such; it is very common to see mage type characters wielding these. However, melee types that use high energy attacks can be seen making use of them as well, for example, Warrior/Element lists. However, a focus adds no innate defense bonus.