Rating Difficulty: Easy

A new passive skill tree mechanic that was added in 3.16 was the Mastery system. When allocating skill points on the passive skill tree, you will gain access to a mastery node when you allocate a passive notable depending on the type of passive cluster you are allocating in. You only gain access to mastery nodes when allocating a notable that is outside of a class's starting area. Note that you can’t access mastery if you’re skipping passive nodes along the way(Etc: Intuitive Leap/Thread of Hope/Anointing amulet). Each passive cluster will only give access to one mastery node, even if you allocate two or more notables within the cluster.

List of masteries on passive skill tree