High Summoner Galatea:
First, go to Trader Lara in the Town of Dion and have your Arcana Cards made. You cannot enter into a battle with another Summoner without one of these cards.
You must battle and defeat 6 Summoners in order to pass the Trials of the Summoner.
Do you have any other questions?
Ask about battle methods. Ask about Arcana Cards. Ask how to create an Arcana Card. Ask about potential opponents.