You know i hear and see this alot. I usualy pop a booster and run strikes till it ends. I always come out with 4 keys. Sometimes 5. Maybe lucky me who knows. You know what my issue is... trying to get the grasp of malok. The damm strike has not appeared for me in 3 days and i have 5 keys. If ibrun the level 16 strike chest does not pop up at the end.