Harry Potter and the March of the Sentinels (Earth-62442, Part 1)

Harry has never been what you'd call normal, and he generally expects the unexpected to happen all the time when he's concerned. But what's a guy to think when, barely an hour after he saves his cousin from Dementors, the two of them are attacked by Sentinels? Luckily, the X-Men arrive in time to pull them to safety. But what will the Order of the Phoenix say? [Pairings undecided].