Suspicious Lakes or Ender Lakes

Overview

This lake is slightly purple and the fluid is impenetrable but otherwise a usual liquid. It only works when generated. When you throw ender pearls in it, you land in another linked Lake that is in a completely different place in the end. Lakes are always linked in groups, meaning if you teleport often enough into the lake you eventually land back where you started. Otherwise the target is random across the whole end dimension, where the places around the spawn of the end spawn more lakes because the coordinates being very high should only occur rarely.

The Chances it brings

This gives a second chance for your end exploration, because if your spawn in the end is bad and you're lucky to find a suspicious lake, you can try a "new" spawn. Also allows to link different builds or farms in your end world in a very unique way. Even in the current end it would help because getting elytra is a pain on large servers and having so many options to choose from to continue your journey would make it less likely that another player looted the elytra.

Technical Details

Take a fixed prime number, e.g. n=7499981. Take the position of the old lake, convert it to a single integer, multiply by a fixed primitive root defined by the world seed, apply a fixed permutation with all the cycles you want for the lakes, multiply by the inverse of the fixed primitive root and convert to coordinates again. This gives you the new (basic, chunk) coordinates for the new lake.