Your archer resembles the Kirin from Chu Shogi
https://en.wikipedia.org/wiki/Chu_shogi
You may want to look around here:
https://www.chessvariants.com/
https://www.superchess.nl/indexengels.htm
https://www.chess.com/forum/view/chess960-chess-variants/letrsquos-invent-some-very-weird-pieces
https://www.chess.com/club/bulldog-chess-players
I don't know if my chess idea is original or someone has already conceived it but I've put up a small web page explaining the layout and rules. It's basically a 10x10 board with one additional piece:
http://design.medeek.com/mdk_chess/medeekchess.html
I think the new archer should prove to be interesting and quite powerful. I'm excited to put together a prototype board and give it a go with my son, Samuel.