Ideally, Wizards of the Coast will create a system where you can either transfer your cards from Magic Online to Arena or store them in some kind of system-neutral database (similar to Pokemon) and use them on either program
Cards in mint or near mint condition are ideal
And now Wizards has created a format that, almost a month into its run with weekly ban list updates, has less cards banned total than either of those formats began with
Devastation Devastation gives you creature and land destruction for 7 mana
In this section, the main section of a set, one can find the standard cards, the holographic rares, and the standard EX if it's the Black & White or XY era, the GX if its the Sun & Moon era, and the V if it's the Sword & Shield era