Puzzle by Antoshka.

Darty, you're great, it's clear that you know the theory very well, although no one ever doubted that. Cobra, the video won't teach you anything. You need to try it out. Or make a video with detailed commentary. For example, no one will understand how to move diagonally from a harpy in the video. And then there's a real challenge - a chessboard and moving neutral units. Darty, don't give hints yet ;)