Chitterspine Spine

Chitterspine Spine drops from the following crabs in Nazjatar:
 * Chitterspine Ambusher
 * Chitterspine Clicker
 * Chitterspine Crab
 * Chitterspine Encroacher
 * Chitterspine Guillotine
 * Chitterspine Lurker

Objective of

 * A Little Edge