Up to 15 heroes fight at once. Each swing costs 0.5 energy, and heroes never recover inside the dungeon. At 0 energy they stop where they are: send them to rest yourself, or buy Lantern Guides to walk them home and back. Heroes heading home or resting at camp don't take a spot, so you can fill it with a fresh hero. At camp they recover 1 energy per minute, or faster in a shrine slot. Max energy: Common 150, Uncommon 300, Rare 450, Epic 600, Legendary 750. Use the speed buttons on the dungeon (up to 30×) to fast-forward fighting and resting.