Its my first week playing this game, I was level 15 and summoned a Sea Emperor 5*. My friends didn't believe that i got him so early. hahaha So, i guess it's just luck..
I've found that the new Raids give out a lot of mystical scrolls, even getting a D rank can get a few of them.
Fighting in guild battles can earn you an Ifrit 5*, which will be a random water/fire/wind type. This was my first 5* after playing for about 5 months.
You also have fusion, with currently 4 mons to choose from. Tbh, some of the 4* mons from fusion are worth keeping to making twice. Unfortunately you can't use the 3/4* fusion mons for raids, though the 5* ones you can.
There's multiple ways to earn LS in this game other than buying them with cash. Guild battles, ToA, drop from worlds boss, buying pieces in the shop/finding them elsewhere (works with guild battle pieces).
Best of luck to anyone trying to find a Nat 5. I've played a little over 6 months now, and have summoned one Sea Emporer out of a MS during a session. 25 MS, 1 LS, 1 LD, 9 ES, 4 elemental scrolls. Not a single dollar spent.
I have played since late sophomore year of my HS. I am now a sophomore in college. I have never summoned a nat 5. I keep with summons like Kona, Rama, Shannon, Lucia, Sieq, Bella, etc. But I got a new phone and can't transfer my progress. So I'm sol.
Long Story Short, It just depends on luck?
This is the longest conversation for such a simple thing.....
you can transfer progress to new devices, it's a server-based game. maybe contact support?