There are many concepts and videos about mob disguise in vanilla, but no one has really posted anything about block disguise in vanilla. What you are looking at here is a concept I made for block disguise in vanilla minecraft.

Did you like this concept? Leave a diamond to show your support!

How does it work?

It is recommended that you watch the video before reading this, or else it might be hard to understand. There is a rapid redstone clock giving power to some command blocks. The command blocks are making the player and the zombie pigman invisible, as well as giving slowness to the zombie pigman.

The zombie pigman is equipped with a diamond ore as a helmet, and it is named "Dinnerbone" so that it is upside down. This makes it look like there is a diamond ore touching the ground like any other block.

The zombie pigman is rapidly getting teleported to the player, making it look like the diamond ore is moving as the player is moving.

If the zombie pigman dies, a new one will be spawned. This feature was added because the zombie pigman loses health everytime the player jumps.

If you have any questions ask it in the comments!