Sorry, but get in line. I'm roughly on day 60 (maybe a couple days shorter than that) and still no 6* to be seen. Getting a 6* is a matter of luck rather than time. You might be a lucky ass bastard and get one on your first roll or you might just as well not ever get one. I've made my peace with it now. I'm fine building an army of 5* I won't ever count on getting any 6*