Once upon a time,
There's a secret jewel that been protected by Girantina somewhere in Distoration World. But that jewel named, Seraphic Amethyst, made a 'Mark of Destiny' to limited person, the person that got it will got the power of Artes. Artes is a fighting power that been had by human.
The Hero of Sinnoh, Dia, got Spade mark in his arms. He met Fransisco, Seraphic Amethyst spirit.
Fransisco tell Dia to go and ring six bells, that bell is,
Bell of Devil, Bell of Diamond, Bell of Heart, Bell of Angel, Bell of Spade and Bell of Clover. That six bells rung and open the gate of Aselia the world that full of artes, Aselia now absorbing all power from Pokemon World.
Dia then call upon all heroes to unite Aselia, they agree and then make a bridge called Root of Palmestic to control Mana, source of power in Aselia, and fusion it with pokemon world power.
The Seraphic Amethyst flied to the bridge and that gem shine to make a pact with summon spirits in Aselia.
Because of that massive power of Seraphic Amethyst that absorb all the heroes power, all of the heroes died and became the Guardian Spirits to all human in Aselia and Pokemon World. Five years after the story, many human possessed the power of artes, they made a link artes, power to link human artes with pokemon attack. Pokemon immigration to Aselia sometimes too! Aselia and Pokemon World now became one..
But...You know the bell that been rung by Dia? What's happen to that bell?
Power as Chosen One
About Link Artes
Mark of Chosen One : (Heart/Diamond/Spade/Clover/Angel)