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I also think that the "Tomb" ability should be allowed. From my limited offline experience, it's a useful ability. I've also encountered situations where, after an early battle, a message appeared saying "Everyone died!", due to some mine, and although I'm a beginner, I don't think the "Tomb" ability should be removed. If the "Tomb" ability contradicts the author's intention, it can always be prohibited by a separate rule in the tournament regulations. Furthermore, it's easier for the organizer – it's difficult to detect violations related to the "Tomb" ability. As for the rest, tournaments have already been held and were quite successful, so the rules are fine.
Просто еще один