Beginner's Guide to Dimensional Rifting Ch. 4 - Risks and Rewards
Beginner's Guide to Dimensional Rifting Ch. 4 - Risks and Rewards is a book object that can sometimes be found at the top of an ancient night elven tower at Ley-Ruins of Zarkhenar in Azsuna, in front of a partial skeleton holding their own Beginner's Guide.[58.3, 12.3] (The legs are by the other portal.)
It requires having purchased and used 
[Beginner's Guide to Dimensional Rifting].
<Penned by the skilled hand of Mentithus Leytracker>
Take heed, dear traveler. Many places overwhelmed with Ley Line energy can be deadly to the beginning Dimensional Rifter.
In places like these the sheer number of rifts create instability and the potential for important belongings to be severed from your person.
Take heed and make sure to keep everything with you and you will often find immense rewards.
Criteria of
Patch changes
Patch 7.0.3 (2016-07-19): Added.