I cannot give him time to think and act, especially since his attacks are one-hit kill on the elves because of how trying to mind control them makes their magic go havoc for incompatibility.
So knowing that, even if I did not have resistance against his mind-controlling magic, I'm, at least, able to hide in the shadows and attack stealthily, away from his eyesight and mind attacks otherwise this fight would have ended far earlier.
That's why I quickly come to the conclusion that is best for them to stay far away and, as my growl resonates in the darkness and ricochets in the open halls of the otherwise silent tomb, I set outside ablaze by making the biggest Fire Shield I have ever done, feeling the price of such magic soon after and knowing that this low magic input will be the end of me.
So I chose to rely on my immense resilience as my SP has yet to decreased at this point.