Bloodletters - Unit of 20

Spend 8 Blood Tithe points at the end of
your movement phase to summon a unit of
20 Bloodletters to the battlefield and add it
to your army.
This unit must be set up more than 9" from
all enemy units and either wholly within 8"
of a friendly KHORNE HERO or wholly within 16" of a Skull Altar in your army.