1.)go to the the daycare west of mauville
2.)put the pokemon you want in the daycare
3.)get the acro bike and the go-goggles
4.) go into the desert north of mauville and and find a mud hill ( the things you can never get up)
5.) tape the up button on the D-pad down in front of it and go to sleep make sure to put the charger in too wake up go to the daycare and get your pokemon