Pure reflex at point-blank range. Stay big, react late with fast hands, and get something behind the ball, then react instantly to the rebound.
The server fires from point-blank range in rapid succession. The keeper stays big, reacts with fast hands, and saves the follow-up. Pure reflex, no time to read. Very high intensity, rotate keepers frequently and keep the volume sensible.
Fork it into your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block.