Hello my Lord,
I understand the frustration of the players , as I'm not lucky at all when I open my Holy during the x2 event . Sometime i'm lucky and i receive the champions grade V , and sometime bad luck ,i receive just grade IV !
I remind you also that x2 doesn't mean you open 2 holy bonds and one is for sure a grade V !
Maybe the players have to wait for the guaranteed champion event ,where opening 3 bonds ,one is guaranteed grade V , just saying...
I wish you a good day and good game !
The chance of not getting a grade 5 from one holy bond is 50% during the event. The chance of not getting a grade 5 from x holy bonds is 0.5^x. So the chance from not getting a grade 5 from 7 holy bonds is 0.5^7 which comes out to a bit under 1%. That may sound very low but with thousands of people doing the event it's bound to happen to a few of them. There's probably somebody else out there who opened 7 holy bonds and every one of them was a grade 5.