Intricate Barriers
With the help of the Cube of Paradox, Adrian created five Quantum Spacemines and used the explosion to push the spear. He also continuously poured all of the nether energy that he has, and the barrier started to get breached as its property is slowly being corroded by his nether energy.
"Greater Summon: Kimat! Slam onto the barrier with your Silver Thunder Armor." Adrian commanded as Kimat got hit by lighting that came from the sky as a silver armor coated his body.
With Kimat's aide in the attack, the power that they could muster made the mages lose more mana than they anticipated. In fact, the royal wizard did not use as much mana as she could because she needed to spare some just in case the intruder in front of them manages to break through. This selfishness proved to be almost fatal to the other mages as their mana circuits got damaged due to overuse.