Doctor Strange: The OathDoctor Strange: The Oath.

Doctor Strange: The Oath is a 2007 comic book limited series written by Brian K. Vaughan, drawn by Marcos Martin, published by Marvel Comics and starring the superhero Doctor Strange. The story follows Strange as he searches for the person who tried to kill him, while he also looks for a stolen magical elixir that will cure the terminal cancer of Wong, his faithful servant. Strange finds himself facing another disciple of the Ancient One, who has learned about the elixir and is determined to destroy it.