Aided by the formal customer, where you spend money and develop a collection of cards, like with report cards, except virtual. The city is quite strong.
The very last quantity I seem to remember ended up being that MTGO creates about the maximum amount of revenue given that global paper MTG (and therefore was back 2007), so that the on the web player population is mostly about because huge as offline population, except most people are in a single place, so it's infinitely more straightforward to get a hold of a casino game at any moment. Handling big collections and building decks from this is naturally also much easier.
Others method is always to decide to try one of the countless no-cost clients on the market, some of which supply principles examining. I'm maybe not up to date of that scene, but a quick google search should enable you to get were only available in no time. Of course, there is not a lot of a collecting aspect here, because you only put together your deck from entire share and play, but OTOH it really is for free, economically.
In terms of having an assortment aspect AND performing this just about free: AFAIK you can do this inside official online game. Cash buys you tokens, and tokens purchase you cards and entry charges to tournaments. In tournaments, it is possible to win tokens. Therefore, given that legend goes, if you're adequate, you'll "go infinite", basically playing and boosting your collection free-of-charge. The existance of such people has-been doubted, however, and I've never ever played MTGO, and so I wouldn't know without a doubt.