Doina, Requiem Singer

Lifelink, Deathtouch, Frosttouch (If this creature
deals damage to a non-vampire creature, tap that
creature, it doesn't untap during its controller's
next untap step)
All Vampire creatures you control have
frosttouch.
Doina, Requiem Singer get +1/+1 for each
non-vampire tapped creature your opponents
control on hte battlefield.