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In short, let Alex and Aretz share their thoughts on the bank/split. As for the grenades, it seems that each group will receive three grenades of each type. There will be an "extra" set of grenades left. And here's the problem of how we're going to divide it. For now, I've come up with this idea: one group takes the quartz, ruby, and spinel grenades, and the other two split the remaining ones in half (I assume one takes the burning and paralyzing grenades, and the other takes the freezing and AoE grenades). Perhaps someone will have better ideas.