Inis
How does Finn's Wrath work with the Mountains and different opponents?
It moves up to two clans in total, which can belong to one or two opponents. The Mountains effect costs one clan (or one Action card). When the moving clans belong to two players, the designer's provisional ruling is that the player of Finn's Wrath chooses who pays. The Journey of Bran moves each player's clans as separate instances, so each mover faces the Mountains; players then take the Advantage card after the Mountain effect.