Question

I want to get a calm nature cresselia that i'm about to catch. Its gonna hopefully be shiny, too.

Answer 1

Have a Pokemon with the Ability Synchronise lead the party. In Gen III and onwards, if the Pokemon with Synchronise has a Nature, wild Pokemon have a 50% chhance to have the same Nature.

So if you have a Pokemon with the Calm Nature + Synchronise, try it on Cresselia.

Comments

I have this alakazam.. :D