Crawling spine

Crawling spines are skeleton spines in Maldraxxus.

Known

 * Erupted Spine
 * Spare Parts (Necrotic Wake)
 * Writhing Rachis

As a companion pet

 * Backbone is crafted from the Necrolords' Abominable Stitching feature.
 * Spinebug (pet) comes from interacting with Spinebug in Maldraxxus.
 * Writhing Spine is a rare drop from Scunner in Maldraxxus.