Not sure how you consider the guide complete without even giving on the hero abilities subject. both the unique and "refreshable" let alone what " refresh" does ( definitely not the term you should use in the English language) or what determines the levels 1-5... add please.
Thanks for the guide! You wrote, one can receive random hero with HB, even legendary. Next sentence declares, only with shards legendary can be obtained. So, what is right? Second question on this: more often buying hero with hb - more slims. Is any info about this? Last one - can talents (second ability) be upgraded?