For a period of time after each activation of a skill, the character cannot move or use any other skills (except those with zero activation time such as stances and shouts). This period of time is called aftercast delay.
The length of aftercast delay is as follows:
Skill types Aftercast delay skills with no activation time 1 0s Ranger and Paragon attack skills with 0.5s activation time 0.75s other attack skills 0s Core and Prophecies Ranger preparations 0s Most Shadow steps 2 0s most other skills 0.75s
1 Excluding Burning Shield, Air of Superiority and Ursan Force.
2 Excluding Aura of Displacement, Dark Prison Death's Charge and Shadow Prison. (These skills have a 0.75s delay)
An unsuccessful attempt to use a skill (e.g., due to an interrupt) does not trigger aftercast delay.
The aftercast delay begins immediately after the skill activates. In other words, for each successful use of a skill, the player cannot move or use another skill (except most zero-activation skills) for at least as long as the skill's activation time plus aftercast delay.