After farming and evolving units in Brave Frontier for nearly 200 days, I notice that
rate of drop of certain evolve material (non guaranteed type)
is proportional to
- number of units of that material in your inventory
so, it is bad to deplete the evolve material count to 0 in your inventory.
I always have hard time to farm metal mimics if my metal mimics inventory < 5.
But rate is much more better after my metal mimic inventory count > 10.
May be this is the hidden code that screw all the BF players, it is not RNGesus work against the player
I got my 6th Rowgen, 6th Narza, 4th Elza, 4th Rosetta, ... and dupe tend to occurs on the highest count.