Updated the OP correcting the info, thanks for pointing this out, ShawnieBoy.
Can I suggest going for
Scapeshift when you have some spare time? It's the core of one of the main decks in Modern atm, so I can imagine there would be people who would be interested in using Magarena to practice playing the deck against the AI. In a card like that, I suppose the maximum amount would be determined by counting the number of lands the player controls?
I do worry about the AI's decision making with a card like
Scapeshift, though, but in my view one of Magarena's main uses for players is as a practice/training tool, so personally I'd support adding the cards that the players might want to use even if I don't expect the AI to be superb when it ends up with them. How do you guys feel about this?