As a old time Magic: The Gathering player, I wanted a deep card game experience but didn't want to have to constantly purchase new cards to update old decks. This game delivers on being deep enough with just what comes in the standard decks to keep me coming back form more (and purchasing new factions unfortunately). If you like CCGs but don't want to keep dumping money in, this is a good alternative.
A fun card-based war game, which has you pitting different races against each other, with each race specialized in some way. They're well balanced in this way. The Elves are very good for long ranged attacks, while the Orcs are powerful, especially with Rage.