Arena:  The higher you upgrade your arena the better chance you have to recruit a better hero.  Heros all have a card number next to them.  10, Jack, Queen, King, and Ace.   10 Being the weakest kind and Ace being the strongest.   All Heros have there strengths and weaknesses.  Some have better Wisdom.  Some are better Defense and the rest Attack power.  It is good to have some of each.  Good having a hero with 2 strong attributes at your castle wall defending!   For you to start getting more and more rumors to get yourself an ace you need to do the following things.   Get your Construction bureau to level 18 and get your arean to level 22-24.  Every hour you can click your arena and go to recruit to try and get a good hero.  Sometimes you get lucky and get one by simply buying a drink to recruit them.  Other times you need to get Rumors.  Once you get enough rumors you can recruit and hire the hero.  Queens take 5 Rumors.  Kings take 10.  And Aces take 20.  You can also buy recruit packs to speed up the process in your gold stores for 40 gold.  Gives you 10 chances to instantly recruit without waiting that hour.  Over time you want each of your castles to have 4-5 kings.  You want your main Castle to have 2 aces.  Or some like having one ace in 2 castles.  I know you can get two aces total.  And youc an get more aces from the reputation shop.  But only after earning enough points and buying hero tokens after playing in PVP events. I will get into more detail at a later time with Special Heros that are redeemed with Ace Tokens.