The attack on Brett and everything was all just a façade. The one who represented the real danger to him since the beginning was Marba. As such, his first objective was to take her out.
The greyish black sword that contained the peculiar energy slowly dropped on the head of the girl. Given the fact that she was a mage— a class whose defensive stat was the weakest out of all the classes and that she was currently in the middle of chanting her magic and could not pull herself out, meant that she was at her most vulnerable state.
In her current state, forget about the powerful sword slash that even a warrior like Burg who specialised in defence, was unable to take on completely, even the weakest attack would prove fatal to her.
Everybody who was powerless enough to watch, had no doubt in kind that once this attack landed, that pretty body of that girl would be split into two.