Shalltear Bloodfallen

Flying
At the beginning of your end step, create a Blood
token for each player who lost life this turn.
Whenever Shalltear attacks, you may sacrifice two
Blood tokens. If you do, you may put a Vampire
card from your hand onto the battlefield tapped and
attacking. It gains indestructible until end of turn.
Based on Strefan, Maurer Progenitor