Skullmaster, Herald of Khorne

Spend 4 Blood Tithe points at the end of
your movement phase to summon 1 Skullmaster, Herald of Khorne 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.