Rubies: A New Rare Overworld Ore with Dark Trades

I have an idea for rubies in Minecraft. They could be rare, kind of like emeralds, maybe only found hot biomes like deserts, savannas, or badlands. Rubies would be sort of the opposite of emeralds, more related to bad or dark magic instead of villagers and “good” trading. We haven’t had a new rare overworld ore since emeralds in 2012. That’s a really long time. Finding diamonds still feels great but it’s also something we’ve been doing the same way for years. I think adding a new rare overworld resource like Ruby could make mining exciting again. Rubies could be used to trade with pillagers and other illagers instead of villagers. You could trade with them at woodland mansions or pillager outposts, but it would be risky. Maybe you’d need to wear a pillager disguise outfit or ruby armor so they don’t attack you or there would be a new illager type specifically designed for this system. The trades could give secret or special items, cursed or rare enchantments, or things you can’t normally get. There could also be a dark version of the Totem of Undying, maybe called the “Totem of Banishment”, with red eyes. Instead of fully saving you, when it activates it would teleport you to a random location. You would survive with very low health and get strong negative effects like blindness, slowness, and weakness for a short time. Another idea is that it could send you to a new dimension that you have to escape from. Maybe it could even work against void damage, unlike the Totem of Undying, but with big consequences.