This game has no Purify Chamber so it takes a while to purify Shadow Pokemon. Besides, you'll end up getting a lot of money from battling the trainers over and over again. Heal in-between battles (Healing Machines in Pyrite) and keep going until every Shadow Pokemon will be ready to be purified when you get to Agate. Once you catch every Shadow Pokemon in Duel Square, get to work on purifying them. *Purify as many Shadow Pokemon as you can at a time. I'm playing the game right now (well, replaying though I never finished) (also: on an actual Gamecube! Thanks goes to my older brothers for getting the game when they were kids XD) and I thought 'y'know, why not share some tips for those wanting to delve into the Orre region?' (wether on a glitchy emulator or on an actual Gamecube).