Offering to Ahnaxbos

As an additional cost to play Offering to
Ahnaxbos, Sacrifice a creature.
Draw 2 Cards.
If the creature sacrificed was white, gain 2 life.
"Ahnaxbos judged the hearts of those who came his
way. Yet those who were offered to him are fed as
treats for his Demon Ammit, lest they incite
rebellion."