Its all luck. My 86 warlock has 2 SHA pieces without coin. SPriest has nothing after 4 weeks and using coins every week.
Where's the SHA mount? I want to ride around on some wispy black tendrily thing.
I have been doing this for weeks with different characters and I just FINALLY won 2 pieces on my lock yesterday (1 obviously extra loot roll). I was beginning to question if I would ever get loot...
The Elder Charms have to give a higher drop rate, because 90% of my drops are from Elder Charms.