The number one thing I like about it is that the UX when playing the game is very good. This is exactly why I didn't play MTGO. Other than the autotap sometimes making dumb decisions, it fells very good.

Other than that, my favorite game mode in MTG has always been drafting, and while drafting free to play is probably not possible right now unless you are amazing, you can draft a lot for little money. I have a win rate under 50% and I can play all the drafts I want to for about 20 dollars per month. If I was a better player, it would be even cheaper.