example; there are five enemies in the battle. two on the left side, two on the right side, and one in the center. suppose, you have killed the left two enemies. now, if you match the tiles on the left side, it would not strike the enemies in the center, right side. but it will surely increase the mana of hero. but in the situation, you have to attack the enemies instead of wasting the turn in filling mana. so make sure to match tiles in the enemy direction.
strong heroes deal double damage to the enemies. weak heroes deal -50% damage to the enemies. how to check the enemy color? 