Question

When i press use it alwas says rowans words echoed and i cant use it what do i do

Answer 1

You will have to go to the top of MT.Corenet where you met Giritina/Dialga/Palkia and then i think you will use it and stairs will appear. Or they will just be there when you climb up.At the top of the stairs is the legendary pokemon....... Pokemaster's gravtar

http://pokemondb.net/pokebase/user/Pokemaster