User blog comment:EHeroMatty/Buddyfight's official "Irregular" Restriction list/@comment-11372432-20180430094556

I am fairly certain that Bushi has certain plans for Ace that they have not shared yet and these plans would be in jeopardy if certain cards were left unrestricted. Similar case to the errata of Impact Skull Reverse to prevent an attack loop in Zetta. I am rather certain that this is all this is.

And if it’s just to keep up a healthy meta, I’m rather sure the main flags to be hit will be Chaos and TEF. They’ve been really dominant for a good while now. It’s rather unprecedented.