Harry growled at the sight. It startled Zabini, but before he could even move Harry had hit him with a high level Stunner, levicorpus and a Body-Bind hex in a chain-cast, each spell drawing power from the last and increasing exponentially in potency as a result. Harry's fury had infused the spell so fiercely he'd overpowered the Body-Bind, resulting in the crushing of most of Zabini's sternum and collapsing a lung, so tight was the bind.