This guide belongs to Dulfy. All credit to her, you can visit her website for the original guide: dulfy.net
GW2 Auric Basin Mastery Insights and Strongboxes Guide.
There are 8 Mastery Insight points granting 8 Mastery Points and 8 AP in total. Additionally, there are 5 strongboxes granting a total of 5 Mastery points and 10 APs for a total of 13 Mastery points and 18 APs.