You change your mind and instead look for an opening.

You are silent and unwilling to play by Shaco's game. He seems to grow impatient as you know that he's about to strike. As he makes the mistake of giving you another second, you swiftly turn and snare him with your punishing magic. He managed to strike you, but with a swift toss of your wand a blissful aura of protection caresses you and nothing comes of his shiv.

Luckily, the monstrous dragon had done quite a bit of damage to him prior to your arrival. He hesitates do to his weakened shape, and curses under his breath as he hadn't managed to finish his initial objective or get an easy kill.

"Curse you! This won't be the last you see of me!" Shaco disappears in a puff of orange smoke.