Procast on anya, as with any other macro, you need to keep the cursor on the enemy champion, the macro itself, gives you a shield, stands with the ulta and passes the rest, BE SURE!!! have all the passive stacks, for a successful procast.
Download the program (Download) and go to the macro editor
press the button «Open file»
and select the downloaded file
assign a macro to a key and run the program