If any expression crossed his face, Tybalt's excuse would have to be that he liked to champion the underdog... but really, the smug look on the upperclassman's face had rubbed him the wrong way, too.

Unfortunately for everyone, Miss Farrow had become a mouse. Undoing the spell as swiftly as he could – the Slytherin boy did not need more time to crow about it – Tyb announced (with much less enthusiasm than usual) the winner of the duel.

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