Duration

Duration is a keyword and refers to attribute of certain effects that continue over time. Specify how long effect remains.

Similar effects - Expiration rate is not calculated the same as duration, but they both are capable of making certain game mechanics last a longer or shorter time.

Exceptions
Duration refers to mechanic of effects not to mechanic of action. Similar characteristics being not related with duration attribute:
 * cooldown
 * cast speed
 * attack speed
 * throwing speed
 * laying speed
 * trap lasts

Mechanics
The duration of a skill effect can be altered with modifiers such as where all increased/reduced modifiers are summed together and  where the product of all more/less modifiers are calculated.

Skill effect duration modifiers
The mod can increase or reduce the duration of skills with this keyword. Specific types of duration effects such as curses or traps can also have their durations modified by passives or items. Buffs which are not created by a skill cannot have their duration altered.

Generic skill duration modifiers do not affect the lifetime of totems, traps or mines.

Version history

 * Modifiers to skill duration no longer modify the duration of traps, totems or mines, but will continue to modify the duration of skills cast by traps, totems and mines if those skills have a duration.
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