Favor of Slaanesh

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 charge rolls
for that unit until your next hero phase. In
addition, if that unit has the Slaanesh keyword,
do not take battleshock tests for that unit until
your next hero phase.