Its needed to learn to better learning 3 and most achievements say how to get them but this one doesn't. That being said, anyone have it or know how to get it?
You have to reach 1,000 favor points with Lem and then collect an emblem from a shrine to Lem, and then one of the options when you click the emblem will be "Spend" and then you will have it!
you need to donate stuff to the shrine of lem and get favour points. When you get the maximum favour points, you are awarded with an emblem :)
You then spend the emblem to unlock the skill.
Hope this helps :D x
Emblems are received after you max out favor with the respective giant. Find a street with a shrine dedicated to Lem via the map and donate items to reach 1000 favor points. Certain items are worth more favor than others. Good luck!