Succumbing To The Pain
Siverly seemed to find pleasure in Henry's pain. At least, that's what it felt like whenever the mage was able to list off another one of Henry's symptoms of being poisoned. There was no lack of suffering for nearly a week.
He had breathed in the poison before which made breathing hard for quite a while - the lingering cough that lasted for months being a sign of poisoning even when the knights were home. However, this go around with the poison resulted in Henry feeling like his energy was being ripped out of him each time he tried to do anything.
He could hardly stand up without immediately feeling exhausted. Even sitting up to eat was a chore. He would nap for hours after having to try to keep down a meal.