I bought it from a friend who got it early. It's a good game, even if it boils down to MTG with dice instead of lands. I love the dice-building aspect and the way that affects which cards can go in decks. It's a great foundation for the game and one of its biggest selling points. The biggest problem with the game, IMO, is the cardpool.
The core set comes with a decent amount of cards, but almost all of them are highly focused around specific synergies. For example, if you're not building a mill deck, there is basically no reason to use half of the cards from the prebuilt mill deck. Other cards have prebuilt synergies that aren't flexible (eg, Bring Forth and False Demon). What this means is that optimized decks will just be better versions of the starter decks, I don't see a lot of room for new archetypes. Since the release plan is comparatively slow (I heard 10-20 cards per quarter), the meta might stagnate.
The other consideration is that these kinds of lifestyle games are competing for a similar pool of players. Most people can't afford the time or money to play more than one or two. We already have Netrunner, Conquest, Thrones 2.0, Star Wars LCG, Xwing, Doomtown, and Magic.