The Lilac glow emanated from Dave's body while he was under the transformation...and just when he felt the process was going to end. His heart stopped beating slowly as if it would stop at any moment.
The blood flowing in his body stopped and he fell motionless on the ground. He was never told that he would die if he used the skills...according to Jin, he was supposed to only lose his mind.
Being confident in his willpower Dave took the risk but it lead him to this moment where he was face to face with Death. His thinking capabilities were also slowing down and it was his time to embrace death.
" Not like this..." There was no way he was going to die like this. He gritted his teeth and hung on to his life as much as possible. However, the more he tried to resist the more pain he received, and his high defence stat was not useful at all.