>>529043184
About 20 rerolls, maybe around 3 hours, I did the rerolling in the background mostly alt tabbing in as you have to let animations play out.
I got the Morgana from the rate up/ premium banner so the next pull is 100% and I'm happy enough with that, so not a crazy god pull or anything.
I would have preferred ann or the Chinese OC yao.
The process isn't terrible just I recommend doing it while doing something else or you'll be bored to tears.