Bruce spread out his hand, palm down, distributing sand particles throughout the chamber. It wasn't a uniform layer, but enough for him to feel where everyone stood and when they moved. 

He glanced behind him to Jenso and, in addition to motioning him forward with a flicker of his eyes, mouthed [color=0072bc][b]"Go."[/b][/color]

Inside of a few seconds, Bruce had a stone wall erected between Jenso and everyone else, cutting him off from sight. 

[color=0072bc][i]'If she cannot see, he might get through.'[/i][/color]

A mass of earth particles shot out of the bag, hovering in the air and shifting rapidly to extend the wall blocking Jenso from view. At the same time, behind that wall, a complex maze of turns, crawl spaces high enough to slide under and elevated gaps took shape. All of the walls continually morphed and changed position- a path leading to the stairs was always present, but it never stayed the same for more than a handful of moments, and the only constant was that one had to be inside the maze to actually see anyone else who was also inside.