Let's talk about our Red Rush strategy...

This kind of wording, by the way, foreshadows a lot of debate about what and how influenced the outcome of the battle.

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And not just what did influence it, but even what could have influenced it. For example, there’s a scout hero with one group of pegasi and they have a shooter. And you attack them with the new growth and you have an angel, but before the growth you didn’t. That is, the growth gives you the first turn, and you can immediately kill the scout hero, but without the growth you couldn’t do that. So, according to the rule, you have no right to attack them.
Of course, someone might say you could just wait with the angel, but it would still contradict the rule.

P.S. I can give other examples where attacking a scout hero with the new growth would violate the rule. But I’m still against canceling the red-rush; it would be much more frustrating to lose when someone attacks you with the new growth, even if it’s an XL map — on such maps, even a meeting rest happens, let alone a meeting on 121.