This is one of the few drills here that I have created myself. It involves using a car tire slamming it repeatedly into a wall. Hook the tire with your fingertips ( just the 4 fingers not the thumb). It is important that you only hook it and not grip it to avoid injury.
The good thing is that you already drive the hips open while let the heavy tire is still going back. That way you create a lot of separation, create a good sequence with the hips leading plus using the stretch shortening cycle.
It it is also a great rotational power training because you are overloading in the rotational plane.
I would recommend doing no more than 8 to 10 reps per set so that you can do every rep at max effort.
Here is a video of me doing the drill: