Ok guys im gonna change my mind about thunderstone-its pretty good even with one source from the shield.
Just did terul and uldy and there are some nasty bosses with very high hp regen. Couldnt hurt them with stormcall, thunderstone did the job.
So my advice-keep the shield
As for uldy- love the new mechanic, the fight now require skill not just spamming non stop barrage, in about 33% or 25% his life he starts to run away form us, seems hard in the start but youll learn how to navigate him in the upper left corridor, in the others corridors you wont see him clearly.
Prime edyrems and ancients?- keep your stormcall equipment, belladona elixir and max balefire so its 5 sec ancients, 15 second primes
2 x uldy kill, charm rolled +0 all skills twice