Ssn'krss, Meandering Dead

When Ssn'krss, Meandering Dead enters the battlefield from your graveyard, draw two cards.
Sacrifice Ssn'krss, Meandering Dead: Target
player sacrifices two creatures.
Sacrifice all creatures you control, pay 4 life:
Return Ssn'krss, Meandering Dead from your graveyard to the battlefield. Acticate this ability
only any time you could cast a sorcery.