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I would outright ban such an object as a warrior's tomb, or make it work like a war treasure – so that if a relic drops, there's always a bag of gold. Also, refuges don't add anything to the game. It would be better to add skill-based elements, like pyramids, for example (I would introduce them on any surface, although they would need to be stylized for each one, but this isn't a problem for HotA).