Rate my pokemon black team for video game championship!?

Your team's good but you have to replace Togekiss, Froslass, and Espeon, it's in the regulations. http://www.pokemonvgc.com/en/regulations I would suggest vanilluxe, gothitelle, and swanna as replacements. (also you probably need a good fire type pokemon or fire type move since carracosta and krookodile are weak to grass) Other than that you have a good team.