One day a boy called Ash challenged his worst enemy Guzma  to a pokemon battle at the arena of doom Ash  chose Necrozma and Guzma chose Diance the battle was in one hour. it was time to experience a life changing feat Ash sent out Necrozma and Guzma sent out Diance, Necrozma used dark side of the sun it did 75 damage then Diance used dazzle and it did 20 damage and then Necrozma used dark pulse and delivered the final blow Diance had fainted.