Pokémon Sapphire Tips

Defeating Wallace easily !
When battling the eight gym Leader ( Wallace, Ice-Type pokemon ) use the Pokemon Shedinja. Because of it's Wonder Guard Special ability, it will be protected from every of your opponent's attacks. In fact, the only way it can faint is that Luvdisc uses his Sweet Kiss and confuses him. Prepare a lot of Berries that cures confusion and then, you will defeat him easily.