Would it only be two heights then, aerial and grounded? Or do you propose to add in an entire system of elevation where in theory a piece could climb to the high ground and thus confer itself an advantage when under attack from an opposing piece of the same class?

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If we intend to go through with this, give me some of the wood you've been using to carve these pieces. After all, you've already introduced quite a few potential dimensions to this game. I, at least, can handle whittling the pegasi and wyverns.