Ultimate Fortress

Synopsis
This spell takes large amounts of magical power and covers themself with it to create a barrier that protects them from all physical harm.

How its done
the user release large amounts magic and uses form control to make it match the users shape, this coating of magical power will protect the user from physical injury however this requires very large amounts of magical power to maintain but if a person can maintain it and keep the concentration of magic to an acceptable level it can be nearly impossible to destroy.

Application
Even tho this spell can make someone nearly impervious to physical harm the magical energy and mental strain it puts of a person makes it unrealistic to use in battle.