Blight Grenades

Standard Grenade rules apply for throwing, may be used to target an area of ground like Smoke or Blind. 
2" blast radius. Affected models suffer a hit of Strength D6; re-roll this Strength value for each hit
inflicted by a Blight grenade. If a 1 is rolled for Strength, resolve the hit and then the Blight has dissipated; remove the marker. Note that unlike most grenades, the effects of a Blight grenade are not perfectly protected against by sealed armour. Models affected by Blight may take normal armour saves, but may not take saves for energy fields or dodges. Enclosed vehicle crewmen on vehicles may be affected; on a roll of a 6 on D6, the blight gets inside the vehicle and affects all crewmen.
Nurgle Daemons and models with a Mark of Nurgle are not effected.
The marker will stay in place until such time as a 1 is rolled when wounding enemy models.