I had my best luck getting the umbral aspect from gambling. I got 3 of em at max roll and 2 at 3 per cc.
As for the helms, sadly all I can do is say good luck as it took me until lvl 96 to finally get tempest roar (and after trying wolfnado, it’s slower than pulverize for me cause I still don’t have a good dire wolf aspect or weapon/totem).