Arena challenge has no impact in damaging blood, army and battle condition. It only can influence your rank in duel field.
According to the rank in duel field, every time you can select 4 players as your rival.
After successful challenge, if your rank is lower than your rival, your rank will exchange. Even though you fail to challenge, but if your rank is higher than your rival, the rank will not change.
You can choose your reward by turning over a card after every victory.
There are 20 chances for you to challenge every day with 10minutes between each challenge. It is available to accelerate cool down.
If the player had continuously won certain battles, we will give an announcement to whole server.