What else does 'Casting Speed' affect?

[nzone]

In the secondary player tab, there is the casting speed (default at 100). I know this affects caster (i.e Storm's Ice Shard etc) but will it speed up the cool-down passive skills also (i.e Defense's passive shield skills)?

Thanks

[Poinas]

No..only casting speed.

[nzone]

Thanks.

So for example Defense's passive shield skills with max point at 6 (no bonuses), the usage frequency is 18%. Where is this 18% calculated from?

my dumb assumption is: out of 100 weapon wielding, the number of shield use is 18?

[Matseb2611]

Yeah, out of 100 possible hits, 18 will be shield procs of that type. However it will not always be that number as it's just a probability.