How to write in cursive in Champion Select?

Control+C Control+V

copy and paste characters from some other format or website that uses such characters. They might have also had a specialized or custom keyboard whos characters were changed to use that format. Instead of pressing the A key and getting an A character, the keyboard could have been reprogrammed to send the input of a cursive A instead. That could possibly cause problems with other programs that require a user input based on letter keys like leagues abilities Q W E R. So it is likely that they just used preformatted text from another source rather than reprogramming their keyboard.