[quote=@1Charak2]
<Snipped quote by Sho Minazuki>

yea its easy to roll for a rarity range

its just rolling for the pokemon q.q honestly have no clue how to do it, 

[/quote]

Why don't to put the name of each pokemon that belong to a certain rarity in a plastic bag. When you roll that rarity then pull a random name out of the bag and that is the pokemon they encounter.