Xenith Adhesivity Spell

Xenith pulled a jar out of the small saddlebag she’d been using to carry her herbs and mixtures. She tossed it to the floor, where it shattered, spreading a licorice-scented goop. The zebra clopped her forehooves in the goop, then her hindhooves.

...

I turned to Calamity and… where was Xenith? I looked around. Then up. She was crawling along the ceiling, the goop on her hooves providing a magical adhesion similar to the spell that the slavers on the train had used against us weeks ago.

Fallout Equestria: Chapter 28