Vampirella, Undead Purifier

Deathtouch, lifelink
{b}{b}: Until end of turn, Vampirella, Undead
Purifier becomes a 3/3 Bat creature with flying.
{t}: Destroy target Vampire creature.
At the beginning of your end step, if Vampirella, Undead Purifier dealt lethal damage, you may
return it to your hand.
"This time I will not hold back. You die."
-Vampirella