A strong Praxis deck I've been playing in ladder. It does well because the big creatures, and has a lot of sinergy (Just pay attention with Sandstorm Titan and your own flying units).
Friendly Wisp and Dawnwalkers have great chances to be actived, with so many 5+ atack units.
Play on curve. You need to think when doing your plays. It's not just a "face" deck.
I'm still testing "Power Stone". Let me know how it goes to you!
Comments and feedback are welcome!