LEGO NINJAGO Skull Sorcerer's Dungeons 71722 contains 1,171 pieces and builds a large dungeon set during Master of the Mountain. The scene features prison areas, bridges and platforms for the NINJAGO board-game system, plus a large Skull Sorcerer figure and different traps and mechanisms. It includes several ninja and enemy minifigures, dice and elements for moving through the dungeon as part of a game.