^ I don't think there's a certain counter spell for the Leg Locker Curse. But I think Finite Incantatem can contradict it. Not sure though.

(James_Potter,Harry used Confringo on Nagini after he jumped out of Hagrid's arms. Nagini is still alive and beside Voldemort by that time. Fyi.)

What spell did Harry used during the TriWizard Tournament to save Cedric Diggory before they both headed to the Portkey (TriWizard Cup)?