Did you know your flash can fire as fast as 6 frames per second or more? IT CAN!
The secret is setting your flash to manual and dialling down the power to about 1/16 power. Your flash will now be able to fire in rapid succession because it doesn’t have to fully recharge after each flash.
Set your camera to the highest shutter speed your camera will sync with your flash and start firing away. You will need to adjust your aperture to get a proper exposure.