The offline aspect can be slightly inconvenient since you cant start cards on one computer and open them on another, but you can simply email yourself the file or stick it into the cloud or something and download MSE on your second device
Lastly, only one Stadium card can be in play at a time, and its effect applies to both you and your opponent
For a product that usually retails around $30-$40, that might seem like a tough sell
He's able to capitalize on having other units in play, but true to his reputation as a singular force of destruction, can also enable the casting of all but the strongest or most expensive spells with little additional support in one fell combat step
Consider all I've said, reposting in card sets
Kasmina had encouraged the twins to apply