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Harry picked up the gauze wrapped object and held it up in front of Draco.
"Draco. Here's your opportunity to show of your magic." He unwrapped the gauze and held the marble up.
Draco looked perplexed.
"I want you to change the marble's size and colour. I don't care what hue it is but knowing you it's likely to be green.
Draco jumped as the orchestra burst forth with a Chuck Berry song. "What the hell is that?"
"Rock and roll Draco. Now get on with it".
Draco smirked and pointed to the gargantuan Slytherin green marble on the pavement.