Even though Sarnish was invisible, he still got hit by an arrow, right in a sensitive part of his tail, he yelled out, for no-one but the spirits of the dead to hear. Since Sarnish couldn't influince any objects that aren't spirits while in the spirit layer, he got flung towards the wall, hitting it hard, luckily this was a dark place, and he re-appeared, quickly pulling out the arrow. He knew he couldn't do anything to these dwarves for atleast an half an hour, by the time he would probably be dead, he then yelled to the others "I am terribly sorry, but I can't help in this!" as he evaded another boulder comming in, he then thought of something, these boulders were only slightly larger then humans, that would mean he could pick them up... "Nevermind, I might have found a way" he said while grabbing one of the boulders, flying up as fast as he could, and then at full speed, flinging the boulder against the side of one of the boulder-holes, tearing the side off, making several dwarves and another boulder fall, which Sarnish only just evaded.