None of this is correct as of Amonkhets release
Many EDH cubes allow players to start with a copy of Sol Ring, Command Tower, Commander's Sphere, and The Prismatic Piper to help decks along and give a commander feel
Luckily, there are means of circumventing this drawback, such as the card Conjurer's Closet, which allows you to blink any of your creatures, washing them of their Nightmare typing before they'd be exiled from Chainer's death
Shes also extremely good for combining with other sweeper resistant gameplans, giving you a reliable source of follow-up threats that are all too happy to pick up a machete for the cause
Aggro, midrange and control will all happily run the card as well
For the next two years, the Fall set released end-of-September/beginning-of-October, and the Spring set released end-of-March/beginning-of-April, exactly six months later