What Does Re Undeintifying A Item Do?

it costs so many emeralds so I am curious what it does?

 

So basically what it does is re-roll the current stats on your items.
If you are unhappy with the stats on your item, you can re-roll it for a sum of emeralds/emerald blocks.
An example is this is if I have a 1/4 mana regen Squid Anklet. Now, I would want the highest stats for the Squid Anklet so that it makes me more powerful.
You can re-roll the Squid Anklet and hope to get a better ID, but this is all just chance. It's a gambling feature, I would say.

 

I would like to add to this:

Yes, as @AskWhatImDoing mentioned, it's a gambling feature, you should only re-ID if you get really bad IDs on an item, because even if you re-ID, you could end up with something worse than before, wasting your money, so be careful.

The price of re-IDing goes up by 5 times each times every time you re-ID an item, making it a big money sink if you're not careful.

For example, if an item costs 50 emeralds to ID, here is what would happen if you re-IDed it multiple times:

50--> 250--> 1250--> 6250--> 31250--> etc..... correct me if I'm wrong.

 

"re unidentifying - you mean re identifying? lmao. it costs so many emeralds because it can make the item worth more and will make the stats better.