Mykael had told him then that he had seen with his own eyes the power of this attack and that he didn't know yet how much the power of Ashton's basic spell had been multiplied by Yelena's chakra but that it had really amazed him and he told him that Kevin was right and that if they all managed to master this technique, it would be a great asset for this war.
Given Mykael's enthusiasm, Caleb had finally agreed to train them because even though there weren't many mages among them, they could still make several powerful pairs.
Kevin obviously wanted to team up with Axel, Alan with Erik, Ian would obviously be with Liam and Colin could combine his already extremely powerful spells with Mykael's chakra, just thinking about it had given him chills.