Keyes nodded toward the barrier squares that he had set up, and two of the other team members set up cameras, while the teachers took out a set of sensors.
"These measure energy disturbances. They will give us a pretty good idea of how much power you are using on each attack. We would like you to use all your power on each strike, even if you know that it will break the barrier. There is a sensor dummy behind that, made of armoured plate, and it will measure the residual impact if your attack isn't dissipated." The teacher explained.
"That should be simple enough. I will send a full strength Rend at each of them, and we will see what the barriers say." Karl agreed.
As soon as he stopped speaking, Karl sent the first attack at the barrier that should be ten percent of the mage's total power. The barrier shattered without any hesitation, and the plating behind the barrier lit up with the impact.