• If someone kills the opponent by cowing, the opponent wins automatically.
• If someone kills one or more worms by cowing, he has to kill the same number of his own worms having at least as much health.
• If someone damages one or more worms by cowing, he has to do similar damage to his own worm(s), even if it kills them.
• If someone cows without causing any damage (e.g. missing, blocking in certain schemes, etc.), he has to skip once.