The Dark Prince often unleashes a limited time Epic Boss that gets stronger as you defeat it. During this event, encounters against the Epic Boss cost a varying amount of Epic Energy depending on how many additional knights and friends you take into battle.
Gain victory rewards for defeating a boss a number of times to unlock the next reward tier. In addition, damage dealt to the Epic Boss will put you in the running for the Damage Leaderboard that offers additional prizes and rewards!
Find Nemesis armor in the Chance Chests and hire friends that have it equipped to deal bonus damage to the boss.