The Maple roll was a 50FG, which was my last roll I've done/did on my alt. I think I've only ever gotten 1 roll without a gold but it came with Ardisia (Paid NGold 5$ roll or so last week) and the worst roll I've done with no rainbows is 1 new/1 dupe gold, that one was a 50FG roll. Honestly I can't say I've had a bad roll yet, and now that I've been playing for a while I'm realising that this good luck streak ain't gonna last much longer. (Not that I'm complaining, I've had more than my fair share of beginner's luck with the gacha by now, someone else deserves it.)