If you are looking for one exercise to rule them all, and you are a combat athlete, might I suggest the Battle Ropes Latera Waves.
You see combat athletes need INCREDIBLE POWER in their transverse plane, whether they are kicking, punching, throwing, or grappling, they will be dominated without rotational power.
The lateral wave is the same rotational movement that is involved in any of those combat sports feats. The mover is using her ground force reaction starting at the foot and ending at the fingertips to generate the most power-packed human movement possible.
You can train rotation with lateral waves in all three metabolic pathways: