The Dungeon of Trials is available at League 20 and provides access to one of two weekly rotating game modes: The Pit and Dark Tower.
Dark Tower is a game mode in which you fight against increasingly difficult AI controlled Player collections with a random selection of Heroes from your collection each turn.
The Pit is a game mode in which you fight against increasingly difficult bosses with your entire collection. However, each hero in your collection can only be used once during the week.
The current active trial is The Pit and will change to Dark Tower at Monday 10AM UTC, 17 January.
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