Crystals are used as a method of drawing from tower dungeon packs. The more advanced the dungeon, the higher the cost of crystals to draw from it's associated pack. These higher priced draws will give the player a much better chance of drawing a more useful and valuable card. Crystals are earned by clearing dungeons, and by completing certain quests. They can also be acquired by raiding other players' fortresses.
page revision: 1, last edited: 11 Jan 2011 17:24