At the start of each round (except for Round 1 and possibly 2), the Night King attacks a castle. Place the Night King’s figure in the domain listed on the bottom of that round’s Ranger Card. He does not move through connected domains like a normal player, and his movement cannot be blocked—he moves directly to the castle.

If any player has units in that domain, this may start a battle (see Battling the Night King). If no player units are in the domain, he immediately takes control of the domain. If the Night King gains control of the domain, the following steps occur:

1. The castle is destroyed for the remainder of the game. Lay the castle on its side to indicate that it is destroyed. It still offers the defensive bonus but can no longer be controlled by the players.

2. If there are any non-player units in the domain, he gains a Terror Token. Place 1 non-player Power Token from the domain into the Terror Pool. All other units from that domain must retreat to the nearest friendly or unoccupied domain, with players choosing which one if there are multiple options.

3. Add 1 White Walker to that domain, and then add 1 to each adjacent domain (this is listed on the Night King’s Mat). If this results in additional battles, resolve each in any order you wish (see Battling a White Walker).

Attacking King’s Landing: The Night King does not need to control any castles to enter King’s Landing or place a White Walker there. This gives him control of the Iron Throne, which counts as a “wild” Terror Token when checking alliances (see Step 3: Checking Alliances/Terrifying).