Battle Coupons

Battle Coupons are used to receive rewards at the end of a Ranked match. 
You can view the amount of Battle Coupons you currently have on the top-right side of the Main screen.

You restore 1 Coupon each 30 minutes. Additionally, you receive 20 Coupons each time you go up a League. 
The current soft limit for Coupons is 20. However, you can go over this limit with Coupons you get for League-ups.

The amount of rewards you receive depends on your place at the end of the match: 

• 1 place - 6 Reward cards
• 2 place - 5 Reward cards
• 3 place - 4 Reward cards
• 4 place - 3 Reward cards
• 5 place - 2 Reward cards 
• 6 place - 1 Reward card

If you don't have any Battle Coupons at the end of the round, you can use Gems (25 Gems per reward) to open your rewards or just skip the reward section.