Make and Stimulators!

I don't quite get what you mean, chaos-like much?



here

Or take my words for it.

When you make items, naturally, there will be a fluctuation in stats, for example, 85 ~ 95 atk is possible for a Casa Crow (90 being avg).
The formula for this is: 1 + floor(stat/10); caps at +/- 5.

Now comes the use of stimulators, they simply remove the chances of negative fluctuations, guaranteeing you an above-avg item if the forging is successful (90% chance of success, as you may have known).

Is this new to maker? because stimulators used with items forged through NPCs could always give you worse stats.