Rasturim, Vampire Progenitor

Deathtouch, Lifelink, Haste
Whenever Rasturim, Vampire Progenitor or
another Vampire you control enters the
battlefield or attacks, create a Blood token.
Vampires you control gain +1/+1 for each Blood
token you control.
Sacrifice five Blood tokens-Transform Rasturim, Vampire Progenitor.