According to myths, the Pokémon created Sinnoh with its power. However, capturing the Pokémon with a Poké Ball prevents it from using its full power... But with the Red Chain, the Pokémon can be shackled, and its power can be used without restraint...

CYRUS ALREADY KNOW that pokeballs on ARCEUS dont work... how? HE TRIED? someone from the past TRIED and cyrus knew from ancestor??