I've often wondered just how difficult it is to get crystals out of the land, for people who aren't us. Obviously, we can just wade out into the wilderness with a pickaxe/hatchet/sledgehammer/scythe, activate our Mary Sue player powers, and gather enough crystals on our own to fuel all the summoning rituals, ever. But Amajina and Sons doesn't seem to include crystals as a major product of theirs, and the only substantial source of crystals we get in-game, seems to be either the beast tribes, or the Ascians (and even they probably get it from the beast tribes).