Once per turn, in your Movement phase, when this unit is set up on the battlefield or ends a Normal, Advance or Fall Back move, it can use this ability. If it does, select one enemy unit within 8" of and visible to this unit and roll one D6 for each SWOOPING HAWKS model in this unit: for each 4+, that enemy unit suffers 1 mortal wound (to a maximum of 6 mortal wounds). Each time this unit uses this ability, until the end of the turn, you cannot target this unit with the Grenade Stratagem.