Olivier

Olivier is one of the innkeeps at The Kingfisher in Novigrad. He sells several Gwent cards including:
 * "Mahakaman Defender" (20 )
 * "Havekar Smuggler" (20 )
 * "Vrihedd Brigade Veteran" (20 )
 * "Havekar Healer" (50 )

He is also a Gwent player, and beating him wins the "Tibor Eggebracht" card.

Associated quests

 * Gwent: Playing Innkeeps
 * Collect 'Em All
 * Now or Never