Catch up on March of the Machine story now, then read March of the Machine: The Aftermath story beginning May 1.
For Commander this really is kind of meaningless, and probably as pushed as Modern and other formats have gotten it's kind of meaningless there too
Just note: its only the first flip
At any point outside a battle, you can swap between the three difficulty settings (Squire, Knight, and Tactician), which respectively map to traditional easy, medium, and hard settings
Baron Von Count is certainly a villain worthy of the distinction and another Commander where it could easily be the only silver-bordered card in your deck
In The Lost Caverns of Ixalan, your players will face an adventure like never before, discovering long-lost ruins, ancient civilizations alive and well, and fan-favorite creatures running rampant