it is, although if you're doing F2P it takes a long time to build the resources to craft your first real deck, so I'd recommend working out what a good, solid list is before committing any of your wildcards. fortunately, every week, they publish a review of decks that have done well that week, so you'll have a good sense of what people are running right now. (if you're doing historic, I'd recommend Sultai, it's a good jack-of-all-trades list that's easy to get value out of. just look for the deck with uro, titan of nature's wrath, nissa, who shakes the world, and hydroid krasis and craft that.) draft is the best value for gold/gems if you can do alright consistently, but it can be pretty costly to start if you don't have the fundamentals down, so if you're new to the game as a whole it may be better to start by buying packs so you can build up your collection.
