On the kickstarter page it said that Heroes had special rules associated with them, but I can't seem to find them in the rule book. Here is what is written on Kickstarter:
And the final 5th card for each realm is a new class card the "Hero". These heroes bring you a new game variant. With this version of the game each player has a Hero, who comes as a 16th card to your hand, and he or she will lead your troops to victory!
So how exactly does this variant work?