Ravenous Sister Erza

Whenever you exile a Human creature card from
your graveyard, create a 2/ 2 black Zombie
creature token.
{2}, {t}, Exile a Human creature card from your graveyard: Look at the top two cards of your
library. Put one of them in your hand and the
other in your graveyard.
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Faith does not die as long as we feed on it.