Board Thread:Game Discussions/@comment-31387708-20170225031423/@comment-27862737-20170225044136

I don't think anyone knows the actual chances on chests, but I can say for sure that they are EXTREMELY low. It's all based on RNG (random number generation), so there's no way to know for sure. On combining Epics to get Dragonforged, that's also probably low, but nowhere near as low as Chance Chest probability.