There are two easy ways to beat Jaden in spirit caller.
First- you high 2000 defense monsters in order to summon the cards like Blue eyes white dragon or any other good card.
second- If you have it use level monsters with a couple of level-ups and mist bodies.
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After you get your first duel spirit, you get to duel him. There are also some other times after that where you duel him
you have to beat the game you have to beat the game
You have to beat the side event Catch The Goblin King... how to find the special event I don't know you could potentially find it on spirit caller walkthrough. Hope this helped. :)
you can duel him in story mode a few times but after you beat the game you can find him on the island somewere.
u make a good deck use vorse raider and some other high atk or def monster