Supports Spell skills, causing them to reduce the cast time of other skills when used. Cannot support Totem skills, Channelling skills, Triggering skills, instant skills, or skills with a Reservation.將此寶石放入技能面板中的輔助寶石插槽，以將其效果套用至該技能。你無法在一個技能中同時插入多個同一類別的輔助寶石。
