The attack that came when William got momentarily distracted to check on his team wasn't that hard to counter actually. But just when William started to replenish his lost materials, another wave of attacks came from this monster, stopping him from doing what he wanted, forcing him to jump to the side, evading that incoming attack.
The monster controlled fire, making it form daggers in the air before fiercely moving towards William. In such darkness, the daggers were easily seen by everyone running fast away from here.
"Is he going to be alright?" Berry couldn't help but ask in worry. She recognised this attack, and it seemed this monster fought someone of fire-based spirit masters before.
It was the fiery daggers technique. It was known to be very brutal and deadly, used by spirit masters in silver grade or higher.