HIS BODY IS OLDER THAN THE EARTH ITSELF

• Doctor strange's body isn't billons of years old. Neither is Earth in the Marvel Universe- it's been around less than a century. And no, we are not crazy
• IN a mind -blending Bronze Age story arc, Eternity-the embodiment of the universe-decrease  the Earth's time is up. Strange sets out to save the world. He fails. Earth is destroyed
• It turns out this is all a scheme by stephen's foe Nightmare, but the destruction is still real. After stephen frees Eternity from Nightmare's grasp. Eternity says he can't undo what's already happened 
• Instead he creates Earth exactly as it was before the end, right down to people's memories. Only Doctor Strange's body carries over from the original Earth, and only he knows the world ended

TO BECOME SORCERER SUPREME, HIS LIFE HAD TO END

• seeing the Earth end was only one of the shocks the Bronze Age held for Doctor Strange. In an earlier story, the Ancient one lost his life, passing his power on to Dr. Strange, Earth's new Sorcerer supreme . He did not tell stephen about the challenges that challenges that lay ahead.
• The first of stephen's trails began when the anti-magical fanatic Silver Dagger stabbed him in the back
• The orb of AGAMAOTTO sucked stephen's soul inside as his life drained.
• In the course of the journey back out, strange confronted the avatar of the end of life, but survived
• When Dr. Strange returned to his physical form, the Ancient one revealed he had once undergone the same passage through the orb. By triumphing over termination, stephen had freed himself of physical fears that might impede his magical growth. He was truly Earth's sorcerer supreme

HIS BODY IS A LIVING WEAPON

• Stephen Strange has always been more about brain than raw power. Part of what makes the LEE run memorable is that strange wins by out-thinking his opponents, not out-zapping them, He pack a punch when he needs to through, physically as well as magically.
• Defenders proved strange is more than just competent. He is able to hold his own with Mantis , Who ranks with the very best Marvel martial artist. Later writers just ignored this and Stephen as more a gifted amateur than a master stephen strange is not as ancient as the ancient one, but he's way more ancient than he looks.