Against Grandmaster I

"Burning your life essence would not save you, human," said Parrotman Grandmaster before motioning its staff toward me, and green mist released from it, surrounding me from all the sides before attacking me.

Crackle Crackle Crackle 

The curse had hit me from the sides; it was extremely powerful and shook uncontrollably in my spot, nearly taking a step back.

It was not a physical blow, but it had felt like one was much stronger than the strongest attack of the vidette. That was just a prequel to the attack; as I had said, it is not a physical attack but the curse attack.

The curse began to seep inside my shields; I could see it was making the Parrotman happy, thinking I was finished, but I am not, not yet.

Curse is one of the elements of my constitution; it is part of me and my strings, and even if it is Grandmaster class power, we do possess quite powerful immunity, which is especially got stronger after I had leveled up to the Tyrant.