Move files with *1234*.txt in the filename and rename the newest file to 1234.txt

Hi experts,

I have a funny scenario,

I have folder with multiple files.
I want to move all the files that has 1234 in the filename to a new folder and rename the newest file to 1234.txt

Example:
I have this three files in a folder, i wish to copy all of them to another folder and rename the newest file to 1234.txt
1. abc-1234-abc.txt             /created at 2015
2. def-1234-def.txt              /created at 2013
3. ghi-1234-ghi.txt              /created at 2011

I have tried this in CMD but it dose not rename the newest file:
move *1234*.* C:\Users\guyo | dir /o-d c:\users\guyo | ren c:\users\guyo\*1234*.* 1234.txt

Does it even possible with CMD?

How can i run it in power shell?