Carthia van Canten, also known as "Cantarella", was the mistress of Vattier de Rideaux, the head of Nilfgaardian intelligence for Emhyr var Emreis. She was informing Assire var Anahid about Vattier's intentions. She had an excellent memory, a lively intelligence, and a mercurial wit.
- See this subject on The Witcher wiki: Carthia van Canten
- Gwent Update: March 23, 2017 Patch: Cantarella strength changed from 6 to 12.; Cantarella now loses 6 base strength when not Spying.; When Cantarella draws a card, you now select it if you want to keep it.