477. Already finished?

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While Cethin was taking the herbs, she stood aside and whispered as he was done. "Gather everything." 

One by one item disappeared and turned into a tiny crystal and disappeared. Kendra chuckled as she felt the energy in her headpiece. It gathered those things, without them becoming spellbound. 

Suddenly a voice could be heard. "Good, good. Someone used Scroll of Gathering smartly. But this room can't stay empty. All those items must come back for the others that need this chance. Tell me, what do you want in exchange?"

Why is that voice familiar?