Daemons of Nurgle only. Remains in Play. Place a small (3") blast template so that its central hole is within 12" of the caster. Whilst in play, the template is treated as dangerous terrain. The template moves D6" in a random direction during every Start of Turn sub-phase. Any unit (friend or foe, but not including Daemons of Nurgle) the moving template touches or moves over suffers a -1 modifier to its Toughness characteristic for the remainder of the turn.