Gwent: Master Mirror is an add-on for the card game "Gwent", which is dedicated to Gunther O'Dimm, known from The Witcher 3: Wild Hunt and the add-on [game =48114]The Witcher 3: Hearts of Stone[/game]. The expansion will include new mechanics: “Devotion” and “Echo”. More than 80 new cards will also become available. Legendary dynamic cards will appear that increase their power with each subsequent round.