Acquiring a knight realm weapon

Kane had been sitting in his Plain, watching what was going on on the battlefield. The bodies kept piling around him and his view was getting blocked. He had no other option but to keep moving his Plain on top of the dead bodies. He soon noticed the red dome that was covering the entire battlefield. When he saw the way everyone ferociously attacked their enemies, he realized that this was the enemy's absolute ability that could induce a sort of berserk rage upon everyone who was within it. 

He saw the battle between the three knights and he marveled at how intense it was. Even though all their absolute abilities were more utility than offensive absolute abilities, this was still not something he should underestimate. He wanted to exit the Plain and help out his allies but he knew that he would fall under the influence of the enemy knight's absolute ability immediately after he stepped out of his Plain.