Pit for LM
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I have nothing against it if you block with a strong hero and army who can put up a fight, but here you could block with any scout hero with a single creature, simply by using a rule clause. That is, it would not be a gameplay moment, but an artificial one.
...a player playing as red does not have the right to attack on the first day of the week with growth purchased on that day:
б) heroes or guarded mines of blue, if the presence of growth could affect the outcome of the battle or losses in battle for either player.