Piranhas

Each time a PIRAHNA model in this unit is destroyed, roll one D6 before removing it from play. On a 6 it explodes, and each unit within 3" suffers 1 mortal wound.

During deployment, you can set up this unit behind enemy lines instead of setting it up on the battlefield. If you do, then in the Reinforcements step of any of your Movement phases you can set up this unit wholly within 6" of any battlefield edge and more than 9" away from any enemy models.

For each PIRAHNA model in this unit, two of this unit's DRONE models begin the battle docked with that PIRAHNA model.