I could care less about getting the Golden Sprockets as i know i have no chance of landing in the top 250 by the end of the event. I am however interested in finding all of the necessary units to earn the Cannon Demon. I managed to get the Hoard Enchanter the last time they held a similar event and i would very much like to get this unit as well. So far i have the Armored Cat, Arc Mage 2, Forged Ram, and the Vision Caster. I still need 4 more units to finish. Anybody know any "tricks" to getting the chests to at least open. (obviously i could use gems but i would rather save the few that i have for when the odds of me getting the big prize don't depend on "luck")