The Imperius curse was looking better and better, but he’d have to be careful about it. He’d have to obliviate Potter after. He couldn’t have a famous wizard from a prominent house – one who already had a grudge against him – recalling that Tom had assaulted him with Dark magic. It would be difficult, given Potter’s occlumency shields, but he was confident he could learn to do it, with enough practice. He’d start experimenting on students in September.