This is tested and confirmed, i found a bunch of other posts related to the ripper but none of them close to this. You can re-search if you'd like
But basically when you teleport, you have a chance of getting a transformation debuff, a soul split evil/good and what is most commonly proc'd, a SMALL debuff. Transformation is the reason people use this item, as it's neat running around looking like the opposing faction for an hour. The "small" debuff procs about 40-50% of the time for me, but if you use [Leyara's Locket] (obtained from firelands dailys) it switches the transformation to "your pattern has been mixed up with opposing faction". Simply click off the locket buff, and enjoy being transformed as opposed to a retarded small buff.
- This is an exploit, as they've done everything to stop you from being able to proc that ability more often. As you used to be able to relog and it would do the same effect. That's been patched, as well as the other post about this item i posted about 4 months ago.
ENJOY!