I have found a use for Pokémon flute.
The combo: Pokémon Flute + Gust of Wind
After you kill a weak Pokémon, use the Pokémon Flute to bring him back on their bench. 
Then, gust of wind it in and open a can of whoop @$$.
Two easy prizes.
Author of Invasion of the Pokémon (http://zap.to/pokemoninvasion/ )