I'd like to nominate Espeon for an analysis. Magic Bounce works quite well against defensive teams, and the ability to bounce back status is always a plus, as status inducers usually don't like being statused as well. It also bounces back entry hazards and incoming Taunts, so it doesn't fear using moves such as Calm Mind. It also makes a decent Dual Screener (though Uxie does it better) and can Baton Pass Calm Minds and Substitute's without fear of being Taunted. Its also has a great base 130 base special attack and a very good base speed of 110, so its perfectly capable of sweeping as well.
Edit: I'd also like to nominate Victreebel. He's a monster under the sun, and essentially functions as a less bulky but more offensively oriented Venusaur. Access to growth only helps it, as it can easily run either a mixed or purely special set. It also has access to Weather Ball, which operates at double BP under the sun, and means Victreebel needn't use Hidden Power Fire to hit Steels, allowing it to use another Hidden Power. It also has a decent support movepool as well, such as Stockpile, Knock Off, and Encore, which it can effectively set up thanks to its boosted speed under the sun.
And, just because it hasn't been mentioned, what about Vulpix? Sure, its bulk isn't fantastic with Eviolite, but its got an ok support movepool, and Drought allows you to give sweepers like Sawsbuck and Charizard abuse Chlorophyll and Solar Power respectively.