'World Arena' is one of the battle of Coin Dragon Master.

You can battle with other masters on 'World Battle'.
New season always starts on Monday 01:00 AM(UTC-0).
And the current season always finishes on Monday 00:00 AM(UTC-0).

When you enter 'World Arena', you can see 3 masters.
And then, you can battle with one of them you chose.
If you don't want to battle with them, you can reset the list.

'World Arena' has 2 types of reward.
1. Mission Reward: When you achieved the specific number of win on World Arena, you can receive the reward until end of the current season.
2. Ranking Reward: You can receive the reward depends on your rank.