Northern Realms Leader Cards | The Witcher 3 Wiki

Ability: Pick an Impenetrable Fog card from your deck and play it instantly.

Ability: Clear any weather effects (on both sides) currently in play.

Ability: Doubles the strength of all Siege units, unless a Commander's Horn is already in play on that row.

Ability: Destroy opponent's strongest Siege units if the strength of that row is 10 or higher.