Unlocking Semi-Modern Blocks And Items In The End

Add some sort of ore under the End Cities that spawn very rarely. It's only purpose is to build blocks out of them (4 ore around like a crafting table to make one block) to create an altar (like a miniature end portal with a pillar on top) and in the empty ring, you drop the special ore. It strikes a end-portal-like lightning strike on the pillar and the ring fills with a newly colored end-portal liquid. When you go in, you gain an achievement that gives you access to semi-modern items, tools, blocks, etc. For new players to learn about this, some cartographer villagers will trade a ancient paper that shows you its existence but no one has done it before. After you defeat the ender dragon and stuff and then go through the portal, your first night sleep in the game will have a "dream" like a cutscene of sorts that reveals the mystery of this new portal. The things now unlocked are for you, the comments, to decide. Maybe the end portal liquid can be infinitely collected and used as water in the nether. What color will it be or should it stay the same as the regular end portal void?