Deploy: Play [1] Rock Barrage(s) from your deck. Increase this value by 1 for each Construct you played this game. If no Rock Barrages are available, move an enemy unit to the other row instead.
Damage an enemy unit by 4 and move it to the other row.
Deploy: Trigger this ability when played.
They're easily mistaken for rocks. Many a troll's been unpleasantly surprised by gastric grief on that very account.