So i brought my newly level 90 shadow priest to the timeless isle, * he was wearing alot of greens, dont ask * anyways i noticed it seemed like every rare i killed or moss chest i opened was cloth timeless gear drops. But the momment he was semi geared in timeless gear i was getting next to none to drop. So i tested this with my IL 533 lock who happens to be my enchanter. And made him wear nothing but greens killing shit on the isle in 1hr of farming rares, and killing elites ive obtained 27 sha crystals. I dont know if this is intended on game mechanics but its a great way to make money or enchants one way or another.