Its horribly strong the hero power or Rivendel. Elrond and Aragorn are insane and the 2 brothers together are unkillable. As it is now, Rivendel can play only with heroes and archers (in 1-2 pikes) without any problem late game.
This topic is really short as most of the players know Rivendel is just broken, one of the things are the heroes due to their powers and passives. Those 4 i mentioned need a big nerf.