It won't make it "easier", but it might make it possible.
Certain ID / SID combos just WON'T have any good spreads.
So say you wanted Zapdos - Timid - 31/31/31/31/31/31 (I know that's not HP Ice, this is just a per se), you can capture this Zapdos on ANY game. HOWEVER only on certain games will it appear shiny.
I would recommend not doing it shiny for now, and seeing what comes up. If you'd rather, I can run the search, and tell you what seed you should aim for, if you tell me what nature you want.
Certain ID / SID combos just WON'T have any good spreads.
So say you wanted Zapdos - Timid - 31/31/31/31/31/31 (I know that's not HP Ice, this is just a per se), you can capture this Zapdos on ANY game. HOWEVER only on certain games will it appear shiny.
I would recommend not doing it shiny for now, and seeing what comes up. If you'd rather, I can run the search, and tell you what seed you should aim for, if you tell me what nature you want.