Guild Wars 2

I finished the HoT explore achievements and added all the gifts together. The resulting Gift of Maguuma said I needed to add this with 3 other things to get Gift of Maguuma Mastery but 1 of the items I cannot find anything about.
What and where can I get gift of Insights?

Just found every Insight under the Mastery Insights page in the chieves… no gift of mastery

As it is used to craft the new legendaries, which havent been enabled yet, I would assume that you get it for crafting the corresponding precursors, which also didnt go live yet.

Here is the recipe
http://wiki.guildwars2.com/index.php?title=Gift_of_Insights&redirect=no