Below is a deck I have with Yennett, Cryptic Sovereign. I have a lot of sphinx creatures in there, but don't be fooled - it's still a nasty control deck, it merely uses all the sphinx as evasive finishers. It's a pretty mean deck, I don't use it frequently because I don't think it's very fun to play against. The deck has a bunch of cards that work well in it, including counter magic, sweepers, sphinx, and topdeck manipulation, so let me know if you have any advice!