While not a Magic: the Gathering product, Ascension: Chronicle of the God Slayer is a game developed by Pro Tour Champions. The game is not a "TCG" but rather a "LCG" similar to the Dominion by Rio Grande games and the Game of Thrones LCG by Fantasy Flight Games.
The game was developed by Brian Kibler, Rob Dougherty and Justin Gary.
Here is the official press release. ManaNation will be sitting down and demoing the game with Brian Kibler at GenCon.