Hello! My name is tools- and I will be using this account on scratch mostly for webtools and my Minecraft 1.12.2 One Command Creations now. Anyways, let's get to it! This is my Instant Diamond Parkour command. It is 3 thousand 6 hundred and 98 characters long. (3,698 characters) By pasting it in to a command block in your 1.12.2 world (use /give @p minecraft:command_block) and powering it, you will see a machine be summoned before your very eyes! Command blocks will fall from the sky, summoning redstone to power themselves and very quickly installing the machine! You will get a message in chat telling you when it's done. Use /gamerule commandBlockOutput true to reset it. To get this command, copy and paste it off of the link in the project! Ta-ta for now!