By speaking as a result of one another’s reflections, they were able to coordinate their attack on Gulo in his den without having getting observed or listened to by him. This allowed the spell to operate, and as they silently attacked, they employed ropes to tie up the dragon’s claws. https://dndmulticlassing67788.blogdal.com/22926605/5-simple-statements-about-dnd-multiclassing-explained