Black Lion Chests contain an assortment of Black Lion items and are opened with a Black Lion Chest Key. The chests themselves are easy enough to come by but the BL Keys can only be obtained through map completion rewards, rare drops, and by purchasing them directly from the Gem Store for 125 gems a piece. BL chests have the potential to reward highly valuable items, but as you’ll see, the odds are not in you favor. We’ve compiled a…