Artifice:

This spell may be cast on a progress quest that is being used to create or upgrade an artifact. If successful, an additional progress quest slot is created for the quest. This additional slot passively earns an amount of progress per session, chosen when the spell is cast, up to a maximum of +3 progress per session. This may not be increased via mech-rp. This spell cannot be used to upgrade Legendary artifacts or create Mythic artifacts. Only one additional progress quest slot may exist from this spell at a time. The cost, complexity and upkeep of the spell is based on the below table. - Cost 4, Upkeep 1, Average | +1 Progress per session - Cost 6, Upkeep 2, Hard | +2 Progress per session - Cost 8, Upkeep 3, Very Hard | +3 Progress per session