An excellent card game with many interesting decisions to make and one in which making good decisions will, indeed, greatly increase your odds of winning.
If you have more than one core set, anyway. With two cores, you have interesting decisions to make while playing. A few Dynasty packs extends that into deck building as well and a third core adds consistency.
If you're looking for a good collectable card game, this is a fine choice. If want a single box board game, this doesn't work quite as well for that.