Siege of Riverrun (Plot)
Intrigue challenge のAttack はできないけれど、Defend はできるようです。
Siege of Riverrun
Type: Plot / House: Neutral
Inc: 3 / Init: 4 / Claim: 2
Military Battle.
You cannot declare Intrigue challenges.
Set: KotS
http://www.cardgamedb.com/index.php/GoTCards.html/_/kings-of-the-sea/siege-of-riverrun-kots
http://www.agotcards.org/card/v/795