Spellstone by Ross Montgomery
 
Evie is an ordinary school girl - quiet and unnoticed. Until one day, a mysterious man recruits her into the Order of the Stone: a team of magicians dedicated to finding and destroying the deadly Spellstone. Most importantly, they must succeed before supervillain Vale gets there first. But how can Evie help the Order? And why has she been chosen as their new leader? Surely, Evie thinks, surely she must have a magical power too.
 
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