Summon Bats

The Vampire produces a bestial bowl that awakens dark creatures and beckons them to his aid.
Once per game the Vampire can use this power at the start of one of his turns. He can choose to summon either a Bat Swarm (one base) or D3+1 Fell Bats. Immediately calculate the Victory points value for new unit. The unit can enter from any table edge in the same way as a unit that had pursued an enemy off the field (see page 76 of the Warhammer rulebook).