"If repairing a corpse is so simple then please, demonstrate," he says dryly and motions with a wave of his hand towards the body. "If I am to assist you, I need to see your magic in action."

And why not repair what harm has already been done. Waiting may be more beneficial, but it's far more fun to call Strange on his bluff than wait for however long this fool's errand lasted. Or until Solas could break the damn spell binding him to this man. Whichever came first.