Complex sentence: Another Salamence is owned by Drake of the Hoenn Elite Four, which appeared in Vanity Affair, it destroys Team Rocket's balloon after Team Rocket tried to steal Pikachu.
Split into simpler sentences: Another Salamence is owned by Drake of the Hoenn Elite Four. It also appeared in Vanity Affair, belonging to Drake of the Elite Four, it destroys Team Rocket's balloon after Team Rocket tried to steal Pikachu.