you cannot

go to warlics shop then mix mermazon kelp , bad juice and slattwob dust it makes a rock then exit then go to aria's pet shop then talk a bout valencia then go see her it says then click on travel passes then click on somewhere and you will have 7 battles to do then after them u might get a peice of it keep doing that till you all pecies then go back to valencia enjoy!

actually after that you need to have a gaurdian sword so you cant

Theyr right you cant

ACTUALLY TO GET THE PET ROCK YOU HAVE TO MIX THE MAGMA LEAF,SLATTWORD DUST, AND BAD JUICE

You Have First Get All The Pieces Go To Valencia Talk About the Blade Of Awe Then Give Her The Guardian Blade You Dick.

bya