One of the Arkentools.
Powers when Attuned
Just what enormities can be expected of Wanda attuned to the Arkenpliers are unclear, but given her vocation for Croakamancy, and given that that school is the aspect of Naughtymancy ruled by the aspect of Fate, it would seem that a powerful artifact of fate in her hands is something to be feared. It is possible that the Arkenpliers greatly increase the power of the magic the attuned user casts (i.e. Wanda being able to Uncroak Prince Ansom without him deteriorating, and while keeping all of his memories intactErf-b1-p144, or being able to Uncroak large armies with little effortErf-b1-p145).
Real World References
It was pointed out that a company named Zhejiang Wanda Tools Co. Ltd specializes in making pliers.