Ackster's magic and fire resistance had increased after Viztar's fire refined his body and the materials inside Smelting Furnace. So, even if Viztar unleashed something as powerful as the earlier stream, Ackster would remain mostly undamaged. And if he attacked Ackster with something more powerful, he could still recover from it, especially now that he was using Limit Breaker.
Besides, Ackster had something much more important to do than deal with the shower of magic attacks.
His belly growled like an angry dog.
There wasn't much blood in the membrane of Viztar's wings. But there was a little, and it smelled so exquisite! It was far better than what Ackster had sensed when he scratched Viztar in his human form. And, beyond that, he was just about to cut out a piece of the wing.