Curate, connect, and discover
Personally, I like to think that Peter actually managed to kill twelve Muggles with a single spell. I mean, the man became an Animagus when he was about fifteen years old. He might not have been a top student in class, but he was clearly no idiot when it came to magic. Not to mention that he actually succeeded in resurrecting Voldemort. So yes, I do believe Peter had some skill when it came to magic and wasn't a complete failure like some people think.