Dice Poker: The Legend

From Witcher Wiki

Dice Poker: The Legend is not an official quest, it is the last phase and ultimate goal of A Game of Dice. It is also independent of the other three dice poker sub-quests. Here, the stakes are the highest, but the title of "legend" and 1000 XP hang in the balance.

[edit] Walkthrough

Well, you've played and beaten everyone you know at poker. Can anyone beat you? It just so happens that King Foltest likes to gamble a little and is pretty good at it. If only he had a worthy opponent who wasn't afraid of him ...

Don't worry about finding him, he'll find you.