Event "Hero's Expedition: Game for the Brave" begins! Strategize to win!

"The evil hero is right here! How can we stop now?" The card event "Hero's Expedition: Game for the Brave" begins. Play a game fit for the brave on a chessboard! Place cards to withstand enemy attacks and strike back strategically. Clear all three chapters and complete event missions to claim Crystals, Source Prisms, Ancient Willpowers, and other fabulous rewards!