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In my opinion, the most significant advantage of ХВ rules is the impossibility of casting Dimension Door one too many times. Even mega-experienced players sometimes get overwhelmed when they are planning long, heavy, complex moves, especially under time pressure. An extra cast of Dimension Door happens spontaneously.
But when this restriction is physically hardcoded, no matter how you look at it, you can't violate it. A very good option.

And in principle, the fact that many rules are integrated directly into the game is a good thing; a beginner doesn't have to cram through some scroll-manuscript, the sight of which fills a normal person with wild melancholy and makes them simply want to sleep rather than play.