Structure related with Bad luck?

A bad luck effect currently exists, but there is currently no way to naturally obtain it in the game. It has no purpose, and I think it would be a nice idea if there were to be an added new structure with this effect. It could be somewhat a mix of the strongholds and mineshafts, where upon entering the area the player gains the the effect (or there's a new mob that spawns in it which applies it if the player got too close) and the loot in this structure would be usually bad, but with a slight chance of getting something very awarding (it would also be a fun addition if this structure had new enchantments that you could only get by finding enchantment books in those places, maybe something such as an enchantment to make you move faster on land, they could generally be based around just playing around like how you can repeatedly launch yourself in air using enchanted tridents in the rain). Obviously bad luck doesnt make certain loot amazing, but it would be fun to have something like that.

Due to the caves update currently being in development I may have been too late to post this, and I'm not too creative either, but I think it could be a good addition if the player is new to the game and wants exclusive enchantments.