From the Deep [Active]
(Rule)Description: The Watcher in the Water can never be part of another Hero model's Warband. When you deploy your Army, do not deploy the Watcher in the Water - keep it aside for later. During the Priority Phase, after Priority has been determined, the Watcher's controlling player must decide if they wish for the Watcher to enter play. If they do, they must roll a D6 and on a 3+ the Watcher is ready to enter play. If this roll is failed, you must roll in each subswquent Priority Phase until the Watcher is ready to enter play.
When the Watcher is ready to enter play, immediately place it anywhere on the battlefield; however, the Watcher cannot displace other models when it enters play in this manner.
The Watcher in the Water cannot Charge on the turn in which it arrives, but may otherwise act normally.