Summary:

He decided to bite the bullet.

“I’m from the future and I need your help,” he said, heart pounding as Strange’s eyes widened with realisation.

“Peter?”
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Alternatively: Strange botches the spell that was meant to make everyone forget Peter and he arrives back in September 2016 with knowledge that could change the world. He may have to fight tooth and nail for every victory and he needs to find a way to stop Thanos, but hey, at least he has his friends!