Sonja, Vaasgoth Death Dealer

Vampires and Nightbound creatures you control
have lifelink and deathtouch.
When Sonja, Vaasgoth Death Dealer enters the
battlefield, it becomes night. When it is day,
sacrifice Sonja, Vaasgoth Death Dealer.
{b}{r}, Exert two Vampires you control: Put Sonja
onto the battlefield from the command zone.
Partner