Moon Dance

Summary
The Moon Dance is a spell used by many mages, most notably Merlin as his defense during the time of the Round Table. The spell creates a replacement body in place of the user, transporting the user directly behind the copy so that the copy will take any attack. The copy is magically linked to the moon, causing any energy from the attack to be transferred into the core of the moon.

Uses
Merlin used this spell many times during the time of the Round Table to personally fight off assassins sent by Morgan meant to kill him to weaken Arthur's army, and even managing to survive his fight with Morgan due to secretly activating it.