Activation time , also referred to as casting time, is the length of time it takes for a skill to prepare before it can initiate. Many skills can be activated while moving, and certain skills have no activation time. Activation time can be affected by certain skills. Certain skills cannot have their activation time canceled until a certain point during the casting time. All skills to date that have an instant activation, such as a charged mantra or switching of an attunement, can be cast in the middle of another skill.