A new way to get to a new realm

The player would have to construct an upright portal frame (5x4) out of endstone bricks. Then the player would have to build three keystones: the overworld keystone, the nether keystone, and the end keystone. To build a keystone you would place a diamond in the middle of the crafting table and surround it in the relevant material from that dimension, i.e. dirt, netherrack, and endstone. Then the player must attach the keystones to the portal by placing the keystones anywhere on the side of portal frame. In order to activate the portal the player must find the key to the related keystone. The overworld key would random generate in the overworld dungeons or mineshafts. The nether key would generate in the nether fortresses or bastion remnants. The end key would be found in the end cities. Now the player would simply place the key in the relevant keystone by placing the key in their hotbar, selecting it, and right clicking on their keystone. Portal tiles would appear filling the interior of the portal frame. The portal tiles would be cyan. There would be small particle effects colored cyan floating around the portal similar to the end portal. I was thinking that this post's portal could be combined with another posts idea for a dimension and that could be a new addition to the game.