The arena is the PVP mode of the game where your selected team will be pitted against another player’s team. The opponents you’ll face will depend on your tier. As you move up to the tiers, you’ll get Crystals and Gold as rewards but you’ll also face tougher and tougher enemies. Sometimes, you’ll encounter “giveaway teams”, or deliberately weak teams consisting only a single character or monster but most of the time, you’ll have to fight against equal or superior teams.
Starting a match in the arena will not consume Stamina. Instead, it will have its own timer that replenishes 1 point every 8 minutes. Winning in the arena will award you with Gold, stamina, and honors. Honor’s is a separate currency that you only use to exchange for a new hero or rune in the Arena Shop. The arena refreshes every week, and you’ll get Crystals as reward for maintaining a particular Rank until the refresh every Sunday at 11PM GMT+8.
PVP battles are purely your own effort. You can’t call in helpers to assist you in combat. You can “re-roll” an opponent if you think you’re underpowered to face the enemy team or if you don’t like its composition. There’s no shame in picking easier opponents. Don’t be fooled with the combat rating alone. Sometimes, you’ll still get defeated by an enemy team 4K-6K points lower than you if you didn’t play your cards right or if you ignored one of his LV60 and 6* purple-starred heroes.