It is that time again
Server coming down for maint in 15 min
can check for updates or status here
http://magic.wizards.com/en/content/magic-online-products-game-infousually last to around 3-4 pm est
sometimes comes up earlier sometimes but not often a bit later
usually in a couple of hours you will be able to download patch prior to servers comnig up so you are ready to go when they do come back up