Callista knew she would only get worse at this as she went on, if she made it past the first round at all – but she would happily cheer Genia on through the transfiguration rounds, sure her sister was in with a chance. (She was quietly relieved not to be competing against their grandmother; no doubt she would have put them all to shame.)

Deep in concentration – this felt like a school exam, NEWTs all over again – she summoned over the waiting bowl of fruit and set about making the fruit (a set of apples, oranges, bananas and pears) dance out the motions of a quadrille.

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