Favor of Nurgle

is a prayer with an answer value of 3 and a range
of 18". If answered, pick 1 friendly Slaves to
Darkness Mortal unit wholly within range and
visible to the chanter. You can re-roll wound
rolls for attacks made with melee weapons by
that unit until your next hero phase. In addition,
if that unit has the Nurgle keyword, add 1 to save
rolls for attacks that target that unit until your
next hero phase.