Procast SF via eul. You need to put the eul on the V key, or change the key to a convenient one in the editor. The ultimate must be on the R key, or change it yourself to a convenient one. If you did not change anything, you just need to bind the macro, for example, to Mouse5. Therefore, if you just want to press eul, you press V, but if you want to press procast through ulta, then press the zabinzhennuyu button and try to get as close as possible to the raised opponent. This program will help you get used to the timing of eul + ult, and after a while you will press the procast without the help of the program.
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