Cluster Mines

After your army deploys, Scouts redeploy and Infiltrators deploy, but before the roll to Seize the Initiative, each unit with cluster mines in your army may booby-trap a single piece of battlefield terrain on the table. The piece of battlefield terrain should be marked with a small marker to remind both players that it has been booby-trapped. Enemy models treat booby-trapped pieces of battlefield terrain as dangerous terrain. Note that having multiple units booby-trap the same piece of battlefield terrain has no additional effect. A unit with cluster mines which begins the game in Reserve may still booby-trap a piece of battlefield terrain.