Parvati followed Hannah's lead and, holding her place in the book with one finger, flipped to the back to look at charm names. "Confundo, convectan, creare," she said, looking at the Cs, before starting with the Ps. "Portus, protean, protego... wait. Protean?" she asked, glancing up at Hannah. "That sounds familiar."
She flipped to the appropriate page, reading the text outloud. "The Protean Charm allows the caster to readily assign a different form to an object, and to easily change the shape. The caster must... blah blah blah... I think this might be it, Hannah!" she said, excitedly. "For the coins, at least."