The Arena is where the PvP (player versus player) element comes in to knights and dragons. You can access the Arena by tapping the starting building that has the two model knights within it. You are then shown a list of possible bouts, and a timer, counting down to when the current tournament ends.
When battling in the Arena, you pick three knights, as with the main quests, and then select an opponent. See the Tournaments section for more info on selecting an opponent. You don't risk your knights' health, rather you use Energy in the Arena instead.
Because you can't see which knights you will be coming up again, you can't select knights based on the Energy -types that you think you will face. As you play more and more bouts in the Arena, however, you will learn the common types that people tend to employ - this varies tremendously based on your level, so it's not really possible to give recommendations on that area.
There's one each week
attack the bottom person that shows on the battle list its a win every time.
Why power attack? It feels like a waste of arena points to me :P[b][/b]
how long is the event ? is ita new one each day