Time travel ?!

In the depths of the deep dark, The ancient builders created an portal like structure that no one knew the reason of existence of until now. The portal was used by the ancient builders to travel back in time to the primeval times, where they took the eggs of one of the creatures the found there and hid it inside temples that have now been took over by the sea and ruined. More of the creatures that lived there were large Tyrannosaurs and brontosaurs that lived there. But back to the story of the time traveling builders. It was a golden age for the ancient builders with the ability to travel back in time to the age of the dinosaurs but soon after they dissrupted the space time continuum and awakend an ancient god that we call the warden to stop the builders from breaking the fabric of time and it worked the once thriving ancients cities are now nothing more than a ruin that only the bravest of explorers dare to explore. But how this will work is if you killed the warden it will drop a time travel key that kan be used to light the portal frame in the ancient cities after that you will be spawned in a primeval world full of dinosaurs and prehistoric vegetation that can be used to breed some species of dinosaurs or youbcan use the meat of dead dinosaurs to breed others also sniffers will spawn naturly in this dimension and this was my idea for 1.21 i hope this will make it into the game