Colosseum

In Colosseum mode, you play as a party of 3 heroes. Once you use some hero for the battle, they will enter cooldown state before being able to be used again in the Colosseum. The 60 Minutes Cooldown for heroes in Colosseum starts when you pressed "battle" button, so you don't need to worry if you finish the battle too long.

Card Reward
The reward is based on how well your hero perform before either you give up, all your heroes all defeated, or you managed to defeat all enemies. please note that the rewards below aren't cumulative.
 * If you managed to slay the first four heroes, you will be rewarded with 1 Card.
 * If you managed to slay half of the wave before "miniboss" (usually 10 levels higher than the first hero level you faced in the battle), you will be rewarded with 3 Cards.
 * If you managed to slay the "miniboss" of the Colosseum (level Y0 Heroes just before the hero with big sprite), you will be rewarded with 5 Cards.
 * If you managed to slay the boss of the Colosseum (level X0 Heroes with big sprite), you will be rewarded with 15 Cards.