Who said "Death is merely a transition I have already mastered."?

This quote is attributed to Kang.

Death is merely a transition I have already mastered. - Kang

"Death is merely a transition I have already mastered."

Kang Death

"I have seen the future, and it is terrible. Unless we act now."

"You cannot escape your destiny. I have already won."

"Time is a river, and I have learned to swim upstream."

"All timelines collapse into one. Mine."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."