The idea is to use Wurmple to get all the Wurmple, Cascoon, Dustox, Silcoon, and Beautifly cards to your hand so you can discard them with Professor's Research. This will allow Wormadam's Matron's Anger to deal massive amounts of damage.
To be clear, this is a fun/casual deck. It is not intended to be competetive, but rather as a fun deck that will occasionally frustrate your friends/opponents. Have fun with it!