Mo heard Professor Romanos yelling, and even if he didn't understand precisely what was happening, he understood the gist - secure your person as quickly as possible and then try to help those around you. It did credit to his years as a mishandled younger sibling that Mo had his wand out of its holster moments later, and he cast the first thing that he thought of at the mud sliding beneath his feet. "Arresto Momentum. Duro!" Anything, really, to get a firm footing as Mo dove for the trees just off the path.

When he scrambled to his feet, his classmates were still sliiiiiiiiiding, though, disappearing down the hill in a tumble of trees and rocks and lots of MUD. How was he supposed to help them when they were so far away and continuing to move past? For all that quick thinking, Mo had the sudden sad thought that he might have to figure out how to get home alone unless he could help the group stop their fall... and then there was Airey with his ropes.

ROPE! "Incarcerous. Incarcerous." Mo shot rope after rope from his wand, wrapping one end securely around trees further down the slope and tying them off to a tree by his side before casting again. Maybe he could catch someone who couldn't reach any of Airey's ropes?