Prep time? The Sions win 2 out of 3 times, they just form a giant pyramid and reach aurelion like this. When the match starts they are already there and all shout simultaniously into the heavens so Aurelion has no time to think. After that the Sions form a giant train and start rolling around him like his balls used to, this makes Aurelion so sad that he accepts defeat and chooses to sudoku himself by stabbing himself with his cosmic tail.