Block of all blocks is exactly what it sounds like, but not really. It is impossible to use it to do stuff with variables, lists, control blocks, operators, sensing blocks, and event blocks. (Except for wait, reset timer, and ask blocks.) Other than those, you can use motion blocks, looks, and sound. Click see inside and look for the tutorial I made. The first 3 numbers are the ID of the block. You will find it in First3Numbers = <ID>. Press space to run the code.
This project was all me. Post your codes in the comments! Put them into the run code custom block and press space to run it. Feel free to report bugs. You will have to import your own sounds.