The work was already well underway when Mo approached the Groundkeeper's hut, and he pondered the hustle of activity for a while before deciding where he would help. It was obvious to him that there was a group working with rocks and making... something clever, a group moving the wood planking, and a group that was building. And since he spotted his little Ravenclaw buddy and his Sophie!sister in that middle group... why not, right?

Mo paused long enough to take his potion and wait for the after effects to wear off before he approached the plank-duelers. "Can I help?"