take your time! I don't mind backtagging, lord knows I've been slow myself.

he uses them quite frequently, in fact, he's a big manipulative d-bag when there's something he wants and can't get through more normal or ethical methods. so it'd be very easy to get him to use them, basically as long as he wanted Mitchell to do something he didn't think he'd agree to otherwise (the details of which we can work out). ALTERNATIVELY if that seems too complicated, he can always bump into Mitchell after having used his powers on someone else, he'd still smell like blood... basically the possibilities, limitless.