The Hareryua store first got its start selling Magic: The Gathering cards online in 2009 and had become deeply involved with the Japanese MTG community
All of this could lead to a Laboratory Maniac or Jace, Wielder of Mysteries wincon, but I didn't want to run those game enders in this deck
He carries on by cataloging the varieties distinguished and gives the names of each
At higher power levels, youre going to have more and better ways of discarding cards from your hand and youll have more ways of turning that into an advantage
These were generally cards that were seen to be too problematic when you always had access to them from the command zone (Rofellos, Llanowar Emissary is a great example, as it could consistently come out on turn 2, or even turn 1 with a particularly spicy hand!)
And while theres no place for it in modern decks (if you really want to gain life per turn, there are better ways to do it), its an interesting bit of MTG history behind it so much so that Wizards reprinted it in the Brothers War: Retro Artifacts set