I found this explanation from an old thread, I'm wondering if it is still true/works this way: ---------------- Here is how the major boost functions. You have a definite rate to drop colored crystals ( 80% for blue, 19% for yellow and 1% for rainbow if I remember it right, you can check it again in old threads ) and they are fixed. In that 80% for blue ones the drop rate for the unit with 3* will be the same, but when a unit has boosted drop rate, then the rate simply increases ( but we don't know how much ). This is also how it works for the yellow and rainbow crystals. ---------------- I am wondering because during this last major boost event, I only did the daily pulls (so what is that, 5 or 6 pulls?), and I pulled a 4* Chiznuts and a 3* Cloud of Darkness. How many "pullable" servants are in the pool when you pull? According to the above, you have a 19% chance of pulling a 4*... but how many different 4* servs are in the pool? 50? So the normal chance to pull a 4* Chiz is (19/100/50)*100 = 0.38%?? Do we know what the "major boosted" rate is? Can someone please clarify? I don't "get lucky"... So I'm very curious how this works.