Why does stone of change refuse some items?
Yesterday I tried for the first time Stone of Change in Marketplace. I tried to bind/attune several items. The Stone refused ("ominous grinding sound") boots and cloak -- neither was bound, and cloak was already permanently damaged. It successfully bound/attuned Muckbane (which was bound already), and ring of swimming. Why are some items rejected?
you said they had permanent damaged, but do they have regular damage
I don't think you can bind items that are damaged (not at the maximum not including permanent damage).
Would have to recheck, but I think I had this issue before, and the items just needed to be repaired and then it worked.
As to the thrower, they are bugged