In terms of New World Order, how did you decide on 20% being the acceptable number of commons that are "red flags" (for readers that aren't familiar with New World Order, this means cards that are complex for new players). Why not 10%, for example? Or why not completely disallow complex cards at common?
Trial and error.
@machinepriestexemplar you were probably thinking of the Pareto principle: https://en.m.wikipedia.org/wiki/Pareto_principle
@c256 Yes, that's the one! I knew I had heard about it somewhere.







