Psyk-out Grenade

Whenever target 'Grey Knight Psyk-out grenades'
unit is selected to shoot, if it is not in engagement
range of any enemy units, roll a D6. If the result
is 2+ the closest visible enemy psyker within 6
inches of this unit suffers Perils of the Warp
Perils of the Warp: Deals D3 mortal wounds. If
this unit is destroyed, deal an addition D3 mortal
wounds to all units within 6 inches