Autocaster

From HGWiki

Stores and queues casting of buffs automatically, this can take a significant amount of time as it individually casts each spell and your buff queue can be broken if you are in a party and somebody joins or leaves. If you add Greater Sanctuary to the Autocaster (good practice for arcane casters with Epic Divination and the Contingency spell) you need to make sure it is the last spell in your list as this will cancel the queue, you can manually de-select spells from the buff queue by clicking on their icons as the casting progresses.