>>35033652In terms of the sheer amount of time needed to invest in your game to get it? Probably getting the Gen 2 starters in Gen 3.
Aside from that, Munchlax is def top tier considering the amount of time you have to wait each try.
Safari Zone pokes are annoying but not impossible, I got Chansey easy when I played RSE.
Feebas and Milotic in Diamond/Pearl, Milotic adds insult to injury cuz it still evolves based on beauty.
There're obviously low percentage chance encounters but that's nothing compared to specialty mons.